Select different State:
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| New Dover Post Office (historical) | New Dover Post Office (historical) | Union | Marysville | |
| Hartford Croton Post Office | Hartford Croton Post Office | Licking | 1158 | Johnstown |
| Celina Post Office | Celina Post Office | Mercer | 876 | Celina |
| Minster Post Office | Minster Post Office | Auglaize | 961 | New Bremen |
| New Bremen Post Office | New Bremen Post Office | Auglaize | 938 | New Bremen |
| Saint Marys Post Office | Saint Marys Post Office | Auglaize | 869 | Saint Marys |
| Wapakoneta Post Office | Wapakoneta Post Office | Auglaize | 892 | Wapakoneta |
| Urbana Post Office | Urbana Post Office | Champaign | 1047 | Urbana West |
| Bellefontaine Post Office | Bellefontaine Post Office | Logan | 1230 | Bellefontaine |
| West Liberty Post Office | West Liberty Post Office | Logan | 1086 | Bellefontaine |
| Defiance Post Office | Defiance Post Office | Defiance | 689 | Defiance East |
| Washington Court House Post Office | Washington Court House Post Office | Fayette | 968 | Washington Court House |
| Waverly Post Office | Waverly Post Office | Pike | 587 | Waverly North |
| Bryan Post Office | Bryan Post Office | Williams | 768 | Bryan |
| Montpelier Post Office | Montpelier Post Office | Williams | 856 | Montpelier |
| Archbold Post Office | Archbold Post Office | Fulton | 735 | Archbold |
| Wauseon Post Office | Wauseon Post Office | Fulton | 768 | Wauseon |
| Greenfield Post Office | Greenfield Post Office | Highland | 906 | Greenfield |
| Hillsboro Post Office | Hillsboro Post Office | Highland | 1125 | Hillsboro |
| Upper Sandusky Post Office | Upper Sandusky Post Office | Wyandot | 853 | Upper Sandusky |
| Carey Post Office | Carey Post Office | Wyandot | 817 | Carey |
| Ada Post Office | Ada Post Office | Hardin | 958 | Ada |
| Kenton Post Office | Kenton Post Office | Hardin | 988 | Kenton |
| Greenville Post Office | Greenville Post Office | Darke | 1043 | Greenville West |
| Marysville Post Office | Marysville Post Office | Union | 991 | Marysville |
| Fostoria Post Office | Fostoria Post Office | Seneca | 778 | Fostoria |
| Tiffin Post Office | Tiffin Post Office | Seneca | 761 | Tiffin South |
| Bucyrus Post Office | Bucyrus Post Office | Crawford | 988 | Bucyrus |
| Galion Post Office | Galion Post Office | Crawford | 1161 | Galion |
| Manchester Post Office | Manchester Post Office | Adams | 512 | Manchester Islands |
| Clyde Post Office | Clyde Post Office | Sandusky | 696 | Clyde |
| Fremont Post Office | Fremont Post Office | Sandusky | 594 | Fremont East |
| Lancaster Post Office | Lancaster Post Office | Fairfield | 837 | Lancaster |
| Biehn Post Office (historical) | Biehn Post Office (historical) | Brown | Unknown | |
| Van Wert Post Office | Van Wert Post Office | Van Wert | 778 | Van Wert |
| Paulding Post Office | Paulding Post Office | Paulding | 722 | Paulding |
| Sidney Post Office | Sidney Post Office | Shelby | 955 | Sidney |
| Piqua Post Office | Piqua Post Office | Miami | 869 | Piqua East |
| Troy Post Office | Troy Post Office | Miami | 827 | Troy |
| London Post Office | London Post Office | Madison | 1050 | London |
| Bethel Post Office | Bethel Post Office | Clermont | 889 | Bethel |
| Blanchester Post Office | Blanchester Post Office | Clinton | 965 | Blanchester |
| Wilmington Post Office | Wilmington Post Office | Clinton | 1004 | Wilmington |
| Dover Post Office | Dover Post Office | Tuscarawas | 896 | Dover |
| Uhrichsville Post Office | Uhrichsville Post Office | Tuscarawas | 856 | Uhrichsville |
| New Philadelphia Post Office | New Philadelphia Post Office | Tuscarawas | 899 | New Philadelphia |
| Gnadenhutten Post Office | Gnadenhutten Post Office | Tuscarawas | 850 | Gnadenhutten |
| Newcomerstown Post Office | Newcomerstown Post Office | Tuscarawas | 804 | Newcomerstown |
| Cambridge Post Office | Cambridge Post Office | Guernsey | 886 | Cambridge |
| Orrville Post Office | Orrville Post Office | Wayne | 1060 | Orrville |
| Wooster Post Office | Wooster Post Office | Wayne | 886 | Wooster |
| Zanesville Post Office | Zanesville Post Office | Muskingum | 712 | Zanesville West |
| Portsmouth Post Office | Portsmouth Post Office | Scioto | 535 | Portsmouth |
| Wellston Post Office | Wellston Post Office | Jackson | 732 | Wellston |
| Marion Post Office | Marion Post Office | Marion | 984 | Marion West |
| Put-in-Bay Post Office | Put-in-Bay Post Office | Ottawa | 591 | Put-in-Bay |
| Genoa Post Office | Genoa Post Office | Ottawa | 627 | Genoa |
| Clay Center Post Office | Clay Center Post Office | Ottawa | 610 | Genoa |
| Rockyridge Post Office | Rockyridge Post Office | Ottawa | 607 | Oak Harbor |
| Oak Harbor Post Office | Oak Harbor Post Office | Ottawa | 587 | Oak Harbor |
| Middle Bass Post Office | Middle Bass Post Office | Ottawa | 577 | Put-in-Bay |
| Port Clinton Post Office | Port Clinton Post Office | Ottawa | 577 | Port Clinton |
| Lakeside-Marblehead Post Office | Lakeside-Marblehead Post Office | Ottawa | 673 | Kelleys Island |
| Elmore Post Office | Elmore Post Office | Ottawa | 617 | Elmore |
| Bluffton Post Office | Bluffton Post Office | Allen | 837 | Bluffton |
| Delphos Post Office | Delphos Post Office | Allen | 774 | Delphos |
| Spencerville Post Office | Spencerville Post Office | Allen | 830 | Spencerville |
| Lima Post Office | Lima Post Office | Allen | 886 | Lima |
| Mansfield Post Office | Mansfield Post Office | Richland | 1220 | Mansfield North |
| Sandusky Post Office | Sandusky Post Office | Erie | 600 | Sandusky |
| Huron Post Office | Huron Post Office | Erie | 591 | Huron |
| Vermilion Post Office | Vermilion Post Office | Erie | 587 | Vermilion East |
| Chillicothe Post Office | Chillicothe Post Office | Ross | 633 | Chillicothe East |
| Circleville Post Office | Circleville Post Office | Pickaway | 699 | Circleville |
| Bellevue Post Office | Bellevue Post Office | Huron | 755 | Bellevue |
| Norwalk Post Office | Norwalk Post Office | Huron | 725 | Norwalk |
| Willard Post Office | Willard Post Office | Huron | 925 | Willard |
| Bellaire Post Office | Bellaire Post Office | Belmont | 663 | Wheeling |
| Bridgeport Post Office | Bridgeport Post Office | Belmont | 653 | Wheeling |
| Martins Ferry Post Office | Martins Ferry Post Office | Belmont | 709 | Wheeling |
| Coshocton Post Office | Coshocton Post Office | Coshocton | 778 | Coshocton |
| Perrysburg Post Office | Perrysburg Post Office | Wood | 630 | Maumee |
| Walbridge Post Office | Walbridge Post Office | Wood | 617 | Walbridge |
| Millbury Post Office | Millbury Post Office | Wood | 614 | Walbridge |
| Bowling Green Post Office | Bowling Green Post Office | Wood | 689 | Bowling Green North |
| North Baltimore Post Office | North Baltimore Post Office | Wood | 732 | North Baltimore |
| Logan Post Office | Logan Post Office | Hocking | 741 | Logan |
| Proctorville Post Office | Proctorville Post Office | Lawrence | 554 | Huntington |
| Ironton Post Office | Ironton Post Office | Lawrence | 554 | Ironton |
| Belpre Post Office | Belpre Post Office | Washington | 604 | Parkersburg |
| Marietta Post Office | Marietta Post Office | Washington | 614 | Marietta |
| Warren Post Office | Warren Post Office | Trumbull | 879 | Warren |
| Girard Post Office | Girard Post Office | Trumbull | 902 | Girard |
| Hubbard Post Office | Hubbard Post Office | Trumbull | 968 | Sharon West |
| Delaware Post Office | Delaware Post Office | Delaware | 873 | Delaware |
| Fairborn Post Office | Fairborn Post Office | Greene | 837 | Fairborn |
| Xenia Post Office | Xenia Post Office | Greene | 938 | Xenia |
| Woodsfield Post Office | Woodsfield Post Office | Monroe | 1214 | Woodsfield |
| Toronto Post Office | Toronto Post Office | Jefferson | 696 | Weirton |
| Brilliant Post Office | Brilliant Post Office | Jefferson | 702 | Steubenville West |
| Steubenville Post Office | Steubenville Post Office | Jefferson | 715 | Steubenville East |
| Mingo Junction Post Office | Mingo Junction Post Office | Jefferson | 669 | Steubenville East |
| Tiltonsville Post Office | Tiltonsville Post Office | Jefferson | 669 | Tiltonsville |
| Rayland Post Office | Rayland Post Office | Jefferson | 679 | Tiltonsville |
| Ashland Post Office | Ashland Post Office | Ashland | 1070 | Ashland South |
| Medway Post Office | Medway Post Office | Clark | 846 | New Carlisle |
| Springfield Post Office | Springfield Post Office | Clark | 945 | Springfield |
| Sylvania Post Office | Sylvania Post Office | Lucas | 659 | Sylvania |
| Toledo Post Office | Toledo Post Office | Lucas | 607 | Toledo |
| Maumee Post Office | Maumee Post Office | Lucas | 633 | Maumee |
| West Carrollton Post Office | West Carrollton Post Office | Montgomery | 715 | Miamisburg |
| Dayton Post Office | Dayton Post Office | Montgomery | 741 | Dayton North |
| Trotwood Post Office | Trotwood Post Office | Montgomery | 837 | Trotwood |
| Saint Clairsville Post Office | Saint Clairsville Post Office | Belmont | 1280 | Saint Clairsville |
| Salem Post Office | Salem Post Office | Columbiana | 1240 | Salem |
| Moultrie Post Office (historical) | Moultrie Post Office (historical) | Columbiana | Unknown | |
| East Palestine Post Office | East Palestine Post Office | Columbiana | 1014 | East Palestine |
| Wellsville Post Office | Wellsville Post Office | Columbiana | 702 | Wellsville |
| Newark Post Office | Newark Post Office | Licking | 837 | Newark |
| Middletown Post Office | Middletown Post Office | Butler | 653 | Middletown |
| Fairfield Post Office | Fairfield Post Office | Butler | 584 | Greenhills |
| Chesterland Post Office | Chesterland Post Office | Geauga | 1237 | Chesterland |
| Franklin Post Office | Franklin Post Office | Warren | 682 | Franklin |
| Lebanon Post Office | Lebanon Post Office | Warren | 718 | Lebanon |
| Painesville Post Office | Painesville Post Office | Lake | 679 | Painesville |
| Fairport Harbor Post Office | Fairport Harbor Post Office | Lake | 614 | Mentor OE N |
| Mentor Post Office | Mentor Post Office | Lake | 689 | Mentor |
| Geneva Post Office | Geneva Post Office | Ashtabula | 673 | Geneva |
| Chagrin Falls Post Office | Chagrin Falls Post Office | Cuyahoga | 919 | Chagrin Falls |
| Berea Post Office | Berea Post Office | Cuyahoga | 794 | Berea |
| Massillon Post Office | Massillon Post Office | Stark | 942 | Massillon |
| Alliance Post Office | Alliance Post Office | Stark | 1109 | Alliance |
| North Canton Post Office | North Canton Post Office | Stark | 1148 | North Canton |
| Canton Post Office | Canton Post Office | Stark | 1053 | Canton West |
| Louisville Post Office | Louisville Post Office | Stark | 1142 | Canton East |
| Eaton Post Office | Eaton Post Office | Preble | 1043 | Eaton South |
| Ravenna Post Office | Ravenna Post Office | Portage | 1125 | Ravenna |
| Kent Post Office | Kent Post Office | Portage | 1053 | Kent |
| Barberton Post Office | Barberton Post Office | Summit | 978 | Akron West |
| Stowe Post Office | Stowe Post Office | Summit | 1138 | Hudson |
| Munroe Falls Post Office | Munroe Falls Post Office | Summit | 1053 | Hudson |
| Cuyahoga Falls Post Office | Cuyahoga Falls Post Office | Summit | 1037 | Hudson |
| Ellet Post Office | Ellet Post Office | Summit | 1086 | Akron East |
| Lakemore Post Office | Lakemore Post Office | Summit | 1083 | Akron East |
| Nelsonville Post Office | Nelsonville Post Office | Athens | 686 | Nelsonville |
| Athens Post Office | Athens Post Office | Athens | 643 | Athens |
| Medina Post Office | Medina Post Office | Medina | 1066 | Medina |
| Wadsworth Post Office | Wadsworth Post Office | Medina | 1181 | Wadsworth |
| Oberlin Post Office | Oberlin Post Office | Lorain | 797 | Oberlin |
| Sheffield Lake Post Office | Sheffield Lake Post Office | Lorain | 600 | Avon |
| Lorain Post Office | Lorain Post Office | Lorain | 607 | Lorain |
| Amherst Post Office | Amherst Post Office | Lorain | 682 | Lorain |
| Elyria Post Office | Elyria Post Office | Lorain | 725 | Grafton |
| Blue Ash Post Office (historical) | Blue Ash Post Office (historical) | Hamilton | 856 | Cincinnati East |
| Norwood Post Office | Norwood Post Office | Hamilton | 636 | Cincinnati East |
| Madeira Post Office (historical) | Madeira Post Office (historical) | Hamilton | 758 | Madeira |
| Cincinnati Post Office | Cincinnati Post Office | Hamilton | 551 | Covington |
| Grove City Post Office | Grove City Post Office | Franklin | 850 | Southwest Columbus |
| Columbus Post Office | Columbus Post Office | Franklin | 725 | Southwest Columbus |
| Casstown Post Office | Casstown Post Office | Miami | 935 | Troy |
| Chagrin Run Post Office (historical) | Chagrin Run Post Office (historical) | Cuyahoga | Unknown | |
| Forest Hill Post Office (historical) | Forest Hill Post Office (historical) | Cuyahoga | Unknown | |
| Gilruth Post Office (historical) | Gilruth Post Office (historical) | Cuyahoga | Unknown | |
| Mechanicsburg Post Office | Mechanicsburg Post Office | Champaign | 1073 | Mechanicsburg |
| West Jefferson Post Office | West Jefferson Post Office | Madison | 912 | West Jefferson |
| Leavittsville Post Office (historical) | Leavittsville Post Office (historical) | Carroll | 1165 | Dellroy |
| Norristown Post Office (historical) | Norristown Post Office (historical) | Carroll | 1129 | Kensington |
| Tabor Post Office (historical) | Tabor Post Office (historical) | Carroll | 958 | Dellroy |
| Bethany Post Office (historical) | Bethany Post Office (historical) | Butler | 837 | Monroe |
| Le Sourdsville Post Office (historical) | Le Sourdsville Post Office (historical) | Butler | 640 | Trenton |
| Pisgah Post Office (historical) | Pisgah Post Office (historical) | Butler | 974 | Mason |
| Port Union Post Office (historical) | Port Union Post Office (historical) | Butler | 604 | Glendale |
| Alert Post Office (historical) | Alert Post Office (historical) | Butler | 633 | Harrison |
| Contreras Post Office (historical) | Contreras Post Office (historical) | Butler | 971 | College Corner |
| Amwell Post Office (historical) | Amwell Post Office (historical) | Wayne | 968 | Rittman |
| Atwood Post Office (historical) | Atwood Post Office (historical) | Carroll | 925 | Dellroy |
| Cypress Post Office (historical) | Cypress Post Office (historical) | Carroll | Unknown | |
| Eckley Post Office (historical) | Eckley Post Office (historical) | Carroll | 1102 | Carrollton |
| Hibbetts Post Office (historical) | Hibbetts Post Office (historical) | Carroll | 1030 | Minerva |
| Kilgore Post Office (historical) | Kilgore Post Office (historical) | Carroll | 1286 | Scio |
| Lamartine Post Office (historical) | Lamartine Post Office (historical) | Carroll | Unknown | |
| Lindentree Post Office (historical) | Lindentree Post Office (historical) | Carroll | 1001 | Mineral City |
| New Hagerstown Post Office (historical) | New Hagerstown Post Office (historical) | Carroll | 958 | Bowerston |
| New Harrisburg Post Office (historical) | New Harrisburg Post Office (historical) | Carroll | 1230 | Dellroy |
| Oneida Post Office (historical) | Oneida Post Office (historical) | Carroll | 1010 | Malvern |
| Pattersonville Post Office (historical) | Pattersonville Post Office (historical) | Carroll | 1043 | Minerva |
| Pinehill Post Office (historical) | Pinehill Post Office (historical) | Carroll | 1227 | Salineville |
| Scroggsfield Post Office (historical) | Scroggsfield Post Office (historical) | Carroll | 1145 | Bergholz |
| Specht Post Office (historical) | Specht Post Office (historical) | Carroll | 1047 | Minerva |
| Wattsville Post Office (historical) | Wattsville Post Office (historical) | Carroll | 1017 | Bergholz |
| Ai Post Office (historical) | Ai Post Office (historical) | Fulton | 732 | Assumption |
| Denson Post Office (historical) | Denson Post Office (historical) | Fulton | 794 | Morenci |
| Elmira Post Office (historical) | Elmira Post Office (historical) | Fulton | 718 | Archbold |
| Oakshade Post Office (historical) | Oakshade Post Office (historical) | Fulton | 797 | Morenci |
| Ottokee Post Office (historical) | Ottokee Post Office (historical) | Fulton | 784 | Wauseon |
| Ritters Post Office (historical) | Ritters Post Office (historical) | Fulton | 768 | Fayette |
| Tedrow Post Office (historical) | Tedrow Post Office (historical) | Fulton | 768 | Wauseon |
| Whiteville Post Office (historical) | Whiteville Post Office (historical) | Fulton | 735 | Assumption |
| Winameg Post Office (historical) | Winameg Post Office (historical) | Fulton | 778 | Lyons |
| Ainger Post Office (historical) | Ainger Post Office (historical) | Williams | Nettle Lake | |
| Bridgewater Post Office (historical) | Bridgewater Post Office (historical) | Williams | Nettle Lake | |
| Cooney Post Office (historical) | Cooney Post Office (historical) | Williams | Nettle Lake | |
| Deer Lick Post Office (historical) | Deer Lick Post Office (historical) | Williams | Montpelier | |
| Karle Post Office (historical) | Karle Post Office (historical) | Williams | Montpelier | |
| Melbern Post Office (historical) | Melbern Post Office (historical) | Williams | Edgerton | |
| Nettlelake Post Office (historical) | Nettlelake Post Office (historical) | Williams | Nettle Lake | |
| Primrose Post Office (historical) | Primrose Post Office (historical) | Williams | Alvordton | |
| Pulaski Post Office (historical) | Pulaski Post Office (historical) | Williams | Montpelier | |
| Williams Center Post Office (historical) | Williams Center Post Office (historical) | Williams | Bryan | |
| Mount Blanco Post Office (historical) | Mount Blanco Post Office (historical) | Meigs | 784 | Vales Mills |
| Downington Post Office (historical) | Downington Post Office (historical) | Meigs | Unknown | |
| Dyesville Post Office (historical) | Dyesville Post Office (historical) | Meigs | Unknown | |
| Carpenter Post Office (historical) | Carpenter Post Office (historical) | Meigs | 620 | Albany |
| Valleyford Post Office (historical) | Valleyford Post Office (historical) | Meigs | 748 | Albany |
| Flora Post Office (historical) | Flora Post Office (historical) | Meigs | 837 | Alfred |
| Reedsville Post Office | Reedsville Post Office | Meigs | 640 | Pond Creek |
| Welsh Post Office (historical) | Welsh Post Office (historical) | Meigs | 656 | Albany |
| Minersville Post Office (historical) | Minersville Post Office (historical) | Meigs | 574 | Chester |
| Bashan Post Office (historical) | Bashan Post Office (historical) | Meigs | 748 | Portland |
| Keno Post Office (historical) | Keno Post Office (historical) | Meigs | 591 | Portland |
| Fayal Post Office (historical) | Fayal Post Office (historical) | Meigs | 758 | Portland |
| Letart Falls Post Office (historical) | Letart Falls Post Office (historical) | Meigs | 587 | New Haven |
| Uniopolis Post Office | Uniopolis Post Office | Auglaize | 935 | Uniopolis |
| Forest Post Office | Forest Post Office | Hardin | 932 | Forest |
| Maple Heights Post Office | Maple Heights Post Office | Cuyahoga | 919 | Shaker Heights |
| Willoughby Post Office | Willoughby Post Office | Lake | 650 | Eastlake |
| Sparta Post Office | Sparta Post Office | Morrow | 1362 | Chesterville |
| Cheviot Post Office (historical) | Cheviot Post Office (historical) | Hamilton | 906 | Cincinnati West |
| Cleves Post Office | Cleves Post Office | Hamilton | 495 | Addyston |
| Newtown Post Office (historical) | Newtown Post Office (historical) | Hamilton | 502 | Withamsville |
| Kelleys Island Post Office | Kelleys Island Post Office | Erie | 591 | Kelleys Island |
| Delta Post Office | Delta Post Office | Fulton | 725 | Delta |
| Geneva-on-the-Lake Post Office (historical) | Geneva-on-the-Lake Post Office (historical) | Ashtabula | 600 | Geneva |
| Gallipolis Post Office | Gallipolis Post Office | Gallia | 574 | Gallipolis |
| Lisbon Post Office | Lisbon Post Office | Columbiana | 974 | Lisbon |
| Lowellville Post Office | Lowellville Post Office | Mahoning | 823 | Campbell |
| Malta Post Office | Malta Post Office | Morgan | 673 | McConnelsville |
| McConnelsville Post Office | McConnelsville Post Office | Morgan | 689 | McConnelsville |
| Hudson Post Office | Hudson Post Office | Summit | 1066 | Hudson |
| Miamisburg Post Office | Miamisburg Post Office | Montgomery | 781 | Miamisburg |
| Groveport Post Office | Groveport Post Office | Franklin | 735 | Lockbourne |
| Napoleon Post Office | Napoleon Post Office | Henry | 682 | Napoleon West |
| Millersburg Post Office | Millersburg Post Office | Holmes | 889 | Millersburg |
| Minerva Post Office | Minerva Post Office | Stark | 1056 | Minerva |
| Gambier Post Office | Gambier Post Office | Knox | 1079 | Mount Vernon |
| New Lexington Post Office | New Lexington Post Office | Perry | 945 | New Lexington |
| Mount Vernon Post Office | Mount Vernon Post Office | Knox | 997 | Mount Vernon |
| Mount Washington Post Office (historical) | Mount Washington Post Office (historical) | Hamilton | 791 | Newport |
| Hazael Post Office (historical) | Hazael Post Office (historical) | Meigs | 594 | Portland |
| Jackson Post Office | Jackson Post Office | Jackson | 676 | Jackson |
| Plain City Post Office | Plain City Post Office | Madison | 935 | Plain City |
| Ottawa Post Office | Ottawa Post Office | Putnam | 728 | Ottawa |
| Newton Falls Post Office | Newton Falls Post Office | Trumbull | 928 | Newton Falls |
| Jefferson Post Office | Jefferson Post Office | Ashtabula | 958 | Jefferson |
| Payne Post Office | Payne Post Office | Paulding | 748 | Payne |
| Niles Post Office | Niles Post Office | Trumbull | 886 | Warren |
| Plymouth Post Office | Plymouth Post Office | Richland | 1010 | Shelby |
| North Ridgeville Post Office | North Ridgeville Post Office | Lorain | 715 | Avon |
| Station H Cleveland Post Office | Station H Cleveland Post Office | Cuyahoga | 620 | East Cleveland |
| Rio Grande Post Office | Rio Grande Post Office | Gallia | 656 | Rio Grande |
| Barnesville Post Office | Barnesville Post Office | Belmont | 1283 | Barnesville |
| Neffs Post Office | Neffs Post Office | Belmont | 732 | Lansing |
| Shadyside Post Office | Shadyside Post Office | Belmont | 686 | Moundsville |
| Cadiz Post Office | Cadiz Post Office | Harrison | 1263 | Cadiz |
| Sharon Center Post Office | Sharon Center Post Office | Medina | 1106 | Wadsworth |
| Apple Creek Post Office | Apple Creek Post Office | Wayne | 1024 | Fredericksburg |
| Beverly Post Office | Beverly Post Office | Washington | 650 | Beverly |
| Blue Rock Post Office | Blue Rock Post Office | Muskingum | 699 | Philo |
| Maria Stein Post Office | Maria Stein Post Office | Mercer | 981 | New Bremen |
| Canal Winchester Post Office | Canal Winchester Post Office | Franklin | 764 | Canal Winchester |
| East Liverpool Post Office | East Liverpool Post Office | Columbiana | 764 | East Liverpool South |
| Arnheim Post Office (historical) | Arnheim Post Office (historical) | Brown | 922 | Ash Ridge |
| Tipp City Post Office | Tipp City Post Office | Miami | 863 | Tipp City |
| Harbor Station Ashtabula Post Office | Harbor Station Ashtabula Post Office | Ashtabula | 630 | Ashtabula North |
| West End Station Ashtabula Post Office | West End Station Ashtabula Post Office | Ashtabula | 679 | Ashtabula South |
| Jaysville Post Office (historical) | Jaysville Post Office (historical) | Darke | 1060 | Greenville East |
| Bull Skin Post Office (historical) | Bull Skin Post Office (historical) | Gallia | Unknown | |
| Sutherland Post Office (historical) | Sutherland Post Office (historical) | Trumbull | Unknown | |
| Coal Hill Post Office (historical) | Coal Hill Post Office (historical) | Muskingum | Unknown | |
| Woodland Park Post Office (historical) | Woodland Park Post Office (historical) | Clermont | 899 | Newtonsville |
| Rye Beach Post Office (historical) | Rye Beach Post Office (historical) | Erie | 581 | Huron |
| Orchard Island Post Office (historical) | Orchard Island Post Office (historical) | Logan | 1004 | Russells Point |
| Mitiwanga Post Office (historical) | Mitiwanga Post Office (historical) | Erie | 594 | Vermilion West |
| Mentor-on-the-Lake Post Office (historical) | Mentor-on-the-Lake Post Office (historical) | Lake | 627 | Mentor |
| Island View Post Office (historical) | Island View Post Office (historical) | Logan | 1014 | Waynesfield |
| Harbor Hills Post Office (historical) | Harbor Hills Post Office (historical) | Licking | 928 | Thornville |
| Fort Scott Camps Post Office (historical) | Fort Scott Camps Post Office (historical) | Hamilton | 538 | Shandon |
| Epworth Heights Post Office (historical) | Epworth Heights Post Office (historical) | Clermont | 709 | Madeira |
| Eagle Cliff Post Office (historical) | Eagle Cliff Post Office (historical) | Cuyahoga | 623 | North Olmsted |
| Craig Beach Post Office (historical) | Craig Beach Post Office (historical) | Mahoning | 951 | Lake Milton |
| Chautaugua Post Office (historical) | Chautaugua Post Office (historical) | Montgomery | 696 | Franklin |
| Cedar Point Post Office (historical) | Cedar Point Post Office (historical) | Erie | 577 | Sandusky |
| Camp Ground Post Office (historical) | Camp Ground Post Office (historical) | Fairfield | 899 | Amanda |
| Buckeye Lake Post Office (historical) | Buckeye Lake Post Office (historical) | Licking | 899 | Thornville |
| Camp Perry Post Office (historical) | Camp Perry Post Office (historical) | Ottawa | Unknown | |
| Dover Bay Post Office (historical) | Dover Bay Post Office (historical) | Cuyahoga | Unknown | |
| Sandusky Station 5 Post Office (historical) | Sandusky Station 5 Post Office (historical) | Erie | Unknown | |
| Russels Point Post Office (historical) | Russels Point Post Office (historical) | Logan | 1004 | Russells Point |
| Bloomdale Post Office | Bloomdale Post Office | Wood | 748 | Bloomdale |
| Bradner Post Office | Bradner Post Office | Wood | 696 | Bradner |
| Custar Post Office | Custar Post Office | Wood | 692 | Weston |
| Cygnet Post Office | Cygnet Post Office | Wood | 702 | North Baltimore |
| Dunbridge Post Office | Dunbridge Post Office | Wood | 663 | Dunbridge |
| Grand Rapids Post Office | Grand Rapids Post Office | Wood | 663 | Grand Rapids |
| Haskins Post Office | Haskins Post Office | Wood | 663 | Bowling Green North |
| Hoytville Post Office | Hoytville Post Office | Wood | 709 | Hoytville |
| Jerry City Post Office | Jerry City Post Office | Wood | 692 | Jerry City |
| Lemoyne Post Office | Lemoyne Post Office | Wood | 640 | Pemberville |
| Luckey Post Office | Luckey Post Office | Wood | 669 | Pemberville |
| Milton Center Post Office | Milton Center Post Office | Wood | 689 | Weston |
| Pemberville Post Office | Pemberville Post Office | Wood | 653 | Pemberville |
| Portage Post Office | Portage Post Office | Wood | 686 | Bowling Green South |
| Risingsun Post Office | Risingsun Post Office | Wood | 718 | Bradner |
| Rossford Post Office | Rossford Post Office | Wood | 597 | Rossford |
| Rudolph Post Office | Rudolph Post Office | Wood | 682 | Bowling Green South |
| Stony Ridge Post Office | Stony Ridge Post Office | Wood | 646 | Rossford |
| Tontogany Post Office | Tontogany Post Office | Wood | 669 | Bowling Green North |
| Wayne Post Office | Wayne Post Office | Wood | 699 | Bradner |
| West Millgrove Post Office | West Millgrove Post Office | Wood | 709 | Fostoria |
| Weston Post Office | Weston Post Office | Wood | 682 | Weston |
| New Knoxville Post Office | New Knoxville Post Office | Auglaize | 902 | New Knoxville |
| Magnetic Springs Post Office | Magnetic Springs Post Office | Union | 935 | Magnetic Springs |
| Richwood Post Office | Richwood Post Office | Union | 945 | Richwood |
| Milford Center Post Office | Milford Center Post Office | Union | 994 | Milford Center |
| Unionville Center Post Office | Unionville Center Post Office | Union | 971 | Marysville |
| Blue Creek Post Office (historical) | Blue Creek Post Office (historical) | Adams | 673 | Blue Creek |
| Best Post Office (historical) | Best Post Office (historical) | Adams | Unknown | |
| Beasleys Fork Post Office (historical) | Beasleys Fork Post Office (historical) | Adams | 574 | Manchester Islands |
| Beaverpond Post Office (historical) | Beaverpond Post Office (historical) | Adams | 745 | Jaybird |
| Bradyville Post Office (historical) | Bradyville Post Office (historical) | Adams | 738 | Maysville East |
| Brush Creek Post Office (historical) | Brush Creek Post Office (historical) | Adams | Unknown | |
| Bush Creek Forge Post Office (historical) | Bush Creek Forge Post Office (historical) | Adams | Unknown | |
| Buck Run Post Office (historical) | Buck Run Post Office (historical) | Adams | 791 | Seaman |
| Bush Creek Furnace Post Office (historical) | Bush Creek Furnace Post Office (historical) | Adams | Unknown | |
| Burkitts Post Office (historical) | Burkitts Post Office (historical) | Adams | Unknown | |
| Cedar Mills Post Office (historical) | Cedar Mills Post Office (historical) | Adams | 561 | Lynx |
| Drennonsville Post Office (historical) | Drennonsville Post Office (historical) | Adams | Unknown | |
| Dunbarton Post Office (historical) | Dunbarton Post Office (historical) | Adams | Unknown | |
| Dunkinsville Post Office (historical) | Dunkinsville Post Office (historical) | Adams | 614 | Lynx |
| Eckmansville Post Office (historical) | Eckmansville Post Office (historical) | Adams | 984 | Decatur |
| Emerald Post Office (historical) | Emerald Post Office (historical) | Adams | 997 | Sugar Tree Ridge |
| Fawcett Post Office (historical) | Fawcett Post Office (historical) | Adams | 837 | Lynx |
| Grimes Post Office (historical) | Grimes Post Office (historical) | Adams | 518 | Concord |
| Gustin Post Office (historical) | Gustin Post Office (historical) | Adams | Unknown | |
| Winchester Post Office | Winchester Post Office | Adams | 951 | Winchester |
| Harshasville Post Office (historical) | Harshasville Post Office (historical) | Adams | 741 | Seaman |
| Bentonville Post Office | Bentonville Post Office | Adams | 915 | Manchester Islands |
| Blue Creek Post Office | Blue Creek Post Office | Adams | 650 | Blue Creek |
| Lynx Post Office | Lynx Post Office | Adams | 801 | Lynx |
| Seaman Post Office | Seaman Post Office | Adams | 909 | Seaman |
| Stout Post Office | Stout Post Office | Adams | 518 | Concord |
| West Union Post Office | West Union Post Office | Adams | 948 | West Union |
| Mineral Springs Post Office (historical) | Mineral Springs Post Office (historical) | Adams | 761 | Jaybird |
| Moore Post Office (historical) | Moore Post Office (historical) | Adams | 531 | Lynx |
| Mount Leigh Post Office (historical) | Mount Leigh Post Office (historical) | Adams | 866 | Seaman |
| Sandy Springs Post Office (historical) | Sandy Springs Post Office (historical) | Adams | 581 | Vanceburg |
| Tranquillity Post Office (historical) | Tranquillity Post Office (historical) | Adams | 791 | Seaman |
| Tulip Post Office (historical) | Tulip Post Office (historical) | Adams | 840 | Concord |
| Waggoner Ripple Post Office (historical) | Waggoner Ripple Post Office (historical) | Adams | 512 | Concord |
| Hillsfork Post Office (historical) | Hillsfork Post Office (historical) | Adams | Unknown | |
| Hodgeville Post Office (historical) | Hodgeville Post Office (historical) | Adams | Unknown | |
| Kopp Post Office (historical) | Kopp Post Office (historical) | Adams | Unknown | |
| Kratzer Post Office (historical) | Kratzer Post Office (historical) | Adams | Unknown | |
| Maddox Post Office (historical) | Maddox Post Office (historical) | Adams | Unknown | |
| McCullough Post Office (historical) | McCullough Post Office (historical) | Adams | Unknown | |
| Osman Post Office (historical) | Osman Post Office (historical) | Adams | Unknown | |
| Pink Post Office (historical) | Pink Post Office (historical) | Adams | Unknown | |
| Sandy Spring Post Office (historical) | Sandy Spring Post Office (historical) | Adams | Unknown | |
| Stephens Post Office (historical) | Stephens Post Office (historical) | Adams | Unknown | |
| Vances Post Office (historical) | Vances Post Office (historical) | Adams | Unknown | |
| Vinyard Hill Post Office (historical) | Vinyard Hill Post Office (historical) | Adams | Unknown | |
| Lawshe Post Office (historical) | Lawshe Post Office (historical) | Adams | 636 | Peebles |
| Irvington Post Office (historical) | Irvington Post Office (historical) | Adams | 820 | Seaman |
| Jacksonville Post Office (historical) | Jacksonville Post Office (historical) | Adams | 886 | Peebles |
| Jaybird Post Office (historical) | Jaybird Post Office (historical) | Adams | 646 | Jaybird |
| Jessup Post Office (historical) | Jessup Post Office (historical) | Adams | 879 | Belfast |
| Locustgrove Post Office (historical) | Locustgrove Post Office (historical) | Adams | 784 | Peebles |
| Locustgrove Post Office (historical) | Locustgrove Post Office (historical) | Allen | 784 | Peebles |
| Marble Furnace Post Office (historical) | Marble Furnace Post Office (historical) | Adams | 676 | Peebles |
| Mayhill Post Office (historical) | Mayhill Post Office (historical) | Adams | 1017 | Belfast |
| Windsor Post Office | Windsor Post Office | Ashtabula | 827 | Windsor |
| Williamsfield Post Office | Williamsfield Post Office | Ashtabula | 1135 | Andover |
| Unionville Post Office | Unionville Post Office | Ashtabula | 1099 | Pierpont |
| Rome Post Office | Rome Post Office | Ashtabula | 853 | Orwell |
| Rock Creek Post Office | Rock Creek Post Office | Ashtabula | 791 | Jefferson |
| Orwell Post Office | Orwell Post Office | Ashtabula | 892 | Orwell |
| Andover Post Office | Andover Post Office | Ashtabula | 1089 | Andover |
| Ashtabula Post Office | Ashtabula Post Office | Ashtabula | 686 | Ashtabula South |
| Dorset Post Office | Dorset Post Office | Ashtabula | 984 | Dorset |
| Austinburg Post Office | Austinburg Post Office | Ashtabula | 810 | Ashtabula South |
| East Orwell Post Office | East Orwell Post Office | Ashtabula | 935 | Orwell |
| Kingsville Post Office | Kingsville Post Office | Ashtabula | 774 | North Kingsville |
| New Lyme Post Office | New Lyme Post Office | Ashtabula | Unknown | |
| North Kingsville Post Office | North Kingsville Post Office | Ashtabula | 709 | North Kingsville |
| Amboy Post Office (historical) | Amboy Post Office (historical) | Ashtabula | Unknown | |
| Bulauh Post Office (historical) | Bulauh Post Office (historical) | Ashtabula | Unknown | |
| Bushnell Post Office (historical) | Bushnell Post Office (historical) | Ashtabula | Unknown | |
| Chapel Post Office (historical) | Chapel Post Office (historical) | Ashtabula | Unknown | |
| Cherry Valley Post Office (historical) | Cherry Valley Post Office (historical) | Ashtabula | Unknown | |
| Clark Corners Post Office (historical) | Clark Corners Post Office (historical) | Ashtabula | Unknown | |
| Colebrook Post Office (historical) | Colebrook Post Office (historical) | Ashtabula | Unknown | |
| Cork Post Office (historical) | Cork Post Office (historical) | Ashtabula | Unknown | |
| Denmark Post Office (historical) | Denmark Post Office (historical) | Ashtabula | Unknown | |
| Dick Post Office (historical) | Dick Post Office (historical) | Ashtabula | Unknown | |
| Dodgeville Post Office (historical) | Dodgeville Post Office (historical) | Ashtabula | Unknown | |
| Eagleville Post Office (historical) | Eagleville Post Office (historical) | Ashtabula | Unknown | |
| East Plymouth Post Office (historical) | East Plymouth Post Office (historical) | Ashtabula | Unknown | |
| East Trumbull Post Office (historical) | East Trumbull Post Office (historical) | Ashtabula | Unknown | |
| Simons Post Office (historical) | Simons Post Office (historical) | Ashtabula | Unknown | |
| Farnham Post Office (historical) | Farnham Post Office (historical) | Ashtabula | Unknown | |
| Footville Post Office (historical) | Footville Post Office (historical) | Ashtabula | Unknown | |
| Gageville Post Office (historical) | Gageville Post Office (historical) | Ashtabula | Unknown | |
| Beaverdam Post Office | Beaverdam Post Office | Allen | 856 | Beaverdam |
| Gomer Post Office | Gomer Post Office | Allen | 778 | Elida |
| Harrod Post Office | Harrod Post Office | Allen | 981 | Harrod |
| LaFayette Post Office | LaFayette Post Office | Allen | 912 | Beaverdam |
| Cairo Post Office | Cairo Post Office | Allen | 814 | Cairo |
| Allentown Post Office (historical) | Allentown Post Office (historical) | Allen | 801 | Elida |
| Conant Post Office (historical) | Conant Post Office (historical) | Allen | 830 | Spencerville |
| Elida Post Office (historical) | Elida Post Office (historical) | Allen | 791 | Elida |
| Hume Post Office (historical) | Hume Post Office (historical) | Allen | 846 | Cridersville |
| Kempton Post Office (historical) | Kempton Post Office (historical) | Allen | 833 | Cridersville |
| Landneck Post Office (historical) | Landneck Post Office (historical) | Allen | 794 | Middle Point |
| Rousculp Post Office (historical) | Rousculp Post Office (historical) | Allen | 955 | Lima |
| Scotts Crossing Post Office (historical) | Scotts Crossing Post Office (historical) | Allen | 778 | Delphos |
| South Warsaw Post Office (historical) | South Warsaw Post Office (historical) | Allen | 925 | Lima |
| Southworth Post Office (historical) | Southworth Post Office (historical) | Allen | 814 | Delphos |
| West Newton Post Office (historical) | West Newton Post Office (historical) | Allen | 1037 | Harrod |
| Yoder Post Office (historical) | Yoder Post Office (historical) | Allen | 958 | Lima |
| Westminster Post Office (historical) | Westminster Post Office (historical) | Allen | 942 | Harrod |
| Austra Post Office (historical) | Austra Post Office (historical) | Allen | Unknown | |
| Cranberry Post Office (historical) | Cranberry Post Office (historical) | Allen | Unknown | |
| Cramersville Post Office (historical) | Cramersville Post Office (historical) | Allen | Unknown | |
| Blue Lick Post Office (historical) | Blue Lick Post Office (historical) | Allen | Unknown | |
| Amanda Post Office (historical) | Amanda Post Office (historical) | Allen | Unknown | |
| Donnels Post Office (historical) | Donnels Post Office (historical) | Allen | Unknown | |
| Donnells Post Office (historical) | Donnells Post Office (historical) | Allen | Unknown | |
| Fort Amanda Post Office (historical) | Fort Amanda Post Office (historical) | Allen | Unknown | |
| Gallatin Post Office (historical) | Gallatin Post Office (historical) | Allen | Unknown | |
| Hog Creek Post Office (historical) | Hog Creek Post Office (historical) | Allen | Unknown | |
| Manahan Post Office (historical) | Manahan Post Office (historical) | Allen | Unknown | |
| Middle River Post Office (historical) | Middle River Post Office (historical) | Allen | Unknown | |
| Scrub Post Office (historical) | Scrub Post Office (historical) | Allen | Unknown | |
| Selig Post Office (historical) | Selig Post Office (historical) | Adams | Unknown | |
| Shell Post Office (historical) | Shell Post Office (historical) | Allen | Unknown | |
| Alexander Post Office (historical) | Alexander Post Office (historical) | Athens | Unknown | |
| Millfield Post Office | Millfield Post Office | Athens | 679 | Jacksonville |
| Giddings Post Office (historical) | Giddings Post Office (historical) | Ashtabula | Unknown | |
| Gould Post Office (historical) | Gould Post Office (historical) | Ashtabula | Unknown | |
| Harpersfield Post Office (historical) | Harpersfield Post Office (historical) | Ashtabula | Unknown | |
| Cherry Fork Post Office | Cherry Fork Post Office | Adams | 902 | Seaman |
| Peebles Post Office | Peebles Post Office | Adams | 830 | Peebles |
| De Loss Post Office (historical) | De Loss Post Office (historical) | Auglaize | Unknown | |
| Belle Vernon Post Office (historical) | Belle Vernon Post Office (historical) | Wyandot | 830 | Sycamore |
| Big Turtle Post Office (historical) | Big Turtle Post Office (historical) | Wyandot | Unknown | |
| Bowshersville Post Office (historical) | Bowshersville Post Office (historical) | Wyandot | 902 | Meeker |
| Deunquat Post Office (historical) | Deunquat Post Office (historical) | Wyandot | 896 | Sycamore |
| Marseilles Post Office (historical) | Marseilles Post Office (historical) | Wyandot | 876 | Marseilles |
| Harpster Post Office | Harpster Post Office | Wyandot | 902 | Meeker |
| Kirby Post Office | Kirby Post Office | Wyandot | 873 | Wharton |
| Little Sandusky Post Office (historical) | Little Sandusky Post Office (historical) | Wyandot | 899 | Marseilles |
| Lovell Post Office (historical) | Lovell Post Office (historical) | Wyandot | 817 | McCutchenville |
| McCutchenville Post Office | McCutchenville Post Office | Wyandot | 791 | McCutchenville |
| Mexico Post Office (historical) | Mexico Post Office (historical) | Wyandot | 814 | Sycamore |
| Nevada Post Office | Nevada Post Office | Wyandot | 932 | Nevada |
| Pious Post Office (historical) | Pious Post Office (historical) | Wyandot | Unknown | |
| Middle Spring Post Office (historical) | Middle Spring Post Office (historical) | Allen | Unknown | |
| Geyer Post Office (historical) | Geyer Post Office (historical) | Auglaize | 1020 | Uniopolis |
| Glynnwood Post Office (historical) | Glynnwood Post Office (historical) | Auglaize | 853 | Moulton |
| Gutman Post Office (historical) | Gutman Post Office (historical) | Auglaize | 1010 | Uniopolis |
| Kossuth Post Office (historical) | Kossuth Post Office (historical) | Auglaize | 843 | Spencerville |
| Layton Post Office (historical) | Layton Post Office (historical) | Auglaize | Unknown | |
| Moulton Post Office (historical) | Moulton Post Office (historical) | Auglaize | 899 | Moulton |
| Pourcelle Post Office (historical) | Pourcelle Post Office (historical) | Auglaize | Unknown | |
| Rassell Creek Post Office (historical) | Rassell Creek Post Office (historical) | Auglaize | Unknown | |
| Rinehart Post Office (historical) | Rinehart Post Office (historical) | Auglaize | 994 | Uniopolis |
| Sussex Post Office (historical) | Sussex Post Office (historical) | Auglaize | Unknown | |
| Fryburg Post Office (historical) | Fryburg Post Office (historical) | Auglaize | 971 | Wapakoneta |
| Vances Post Office (historical) | Vances Post Office (historical) | Allen | Unknown | |
| Shade Post Office | Shade Post Office | Athens | 810 | Shade |
| Sharpsburg Post Office | Sharpsburg Post Office | Athens | 663 | Amesville |
| Trimble Post Office | Trimble Post Office | Athens | 679 | Jacksonville |
| The Plains Post Office | The Plains Post Office | Athens | 715 | The Plains |
| Stewart Post Office | Stewart Post Office | Athens | 666 | Stewart |
| Nelsonville Post Office | Nelsonville Post Office | Athens | 679 | Nelsonville |
| New Marshfield Post Office | New Marshfield Post Office | Athens | 820 | The Plains |
| Zelda Post Office (historical) | Zelda Post Office (historical) | Athens | Unknown | |
| Youba Post Office (historical) | Youba Post Office (historical) | Athens | 879 | Lubeck |
| Woodyards Post Office (historical) | Woodyards Post Office (historical) | Athens | Unknown | |
| Broadwell Post Office (historical) | Broadwell Post Office (historical) | Athens | 633 | Stewart |
| Vanderhoof Post Office (historical) | Vanderhoof Post Office (historical) | Athens | 869 | Coolville |
| Utley Post Office (historical) | Utley Post Office (historical) | Athens | 646 | Amesville |
| Selby Post Office (historical) | Selby Post Office (historical) | Athens | Unknown | |
| Floodwood Post Office (historical) | Floodwood Post Office (historical) | Athens | Unknown | |
| Luhrig Post Office (historical) | Luhrig Post Office (historical) | Athens | 682 | The Plains |
| Pratts Fork Post Office (historical) | Pratts Fork Post Office (historical) | Athens | 794 | Shade |
| Poston Post Office (historical) | Poston Post Office (historical) | Athens | 715 | Jacksonville |
| Armdale Post Office (historical) | Armdale Post Office (historical) | Athens | 607 | Amesville |
| Anthony Post Office (historical) | Anthony Post Office (historical) | Athens | 899 | Alfred |
| Jacksonville Post Office | Jacksonville Post Office | Athens | 679 | Jacksonville |
| Albany Post Office | Albany Post Office | Athens | 761 | Albany |
| Amesville Post Office | Amesville Post Office | Athens | 633 | Amesville |
| Buchtell Post Office | Buchtell Post Office | Athens | 692 | Nelsonville |
| Carbondale Post Office | Carbondale Post Office | Athens | 748 | Union Furnace |
| Chauncey Post Office | Chauncey Post Office | Athens | 659 | Nelsonville |
| Coolville Post Office | Coolville Post Office | Athens | 712 | Coolville |
| Glouster Post Office | Glouster Post Office | Athens | 682 | Corning |
| Guysville Post Office | Guysville Post Office | Athens | 673 | Stewart |
| Hockingport Post Office | Hockingport Post Office | Athens | 620 | Coolville |
| Savannah Post Office | Savannah Post Office | Ashland | 1102 | Ashland North |
| Polk Post Office | Polk Post Office | Ashland | 1263 | Polk |
| Perrysville Post Office | Perrysville Post Office | Ashland | 994 | Perrysville |
| Jeromesville Post Office | Jeromesville Post Office | Ashland | 1007 | Jeromesville |
| Hayesville Post Office | Hayesville Post Office | Ashland | 1243 | Ashland South |
| Nova Post Office | Nova Post Office | Ashland | 1129 | Nova |
| Loudonville Post Office | Loudonville Post Office | Ashland | 974 | Loudonville |
| Nankin Post Office | Nankin Post Office | Ashland | 1037 | Ashland North |
| Sullivan Post Office | Sullivan Post Office | Ashland | 1125 | Sullivan |
| McKay Post Office (historical) | McKay Post Office (historical) | Ashland | 1175 | Loudonville |
| McZena Post Office (historical) | McZena Post Office (historical) | Ashland | 1033 | Loudonville |
| Mifflin Post Office (historical) | Mifflin Post Office (historical) | Ashland | 1073 | Ashland South |
| Paradise Hill Post Office (historical) | Paradise Hill Post Office (historical) | Ashland | 1217 | Pavonia |
| Redhaw Post Office (historical) | Redhaw Post Office (historical) | Ashland | 1027 | Polk |
| Ruggles Post Office (historical) | Ruggles Post Office (historical) | Ashland | 1099 | New London |
| Albion Post Office (historical) | Albion Post Office (historical) | Ashland | 1132 | Polk |
| Friends Post Office (historical) | Friends Post Office (historical) | Ashland | Unknown | |
| Rows Post Office (historical) | Rows Post Office (historical) | Ashland | Unknown | |
| Ramey Post Office (historical) | Ramey Post Office (historical) | Ashland | Unknown | |
| Perote Post Office (historical) | Perote Post Office (historical) | Ashland | Unknown | |
| Mohican Post Office (historical) | Mohican Post Office (historical) | Ashland | Unknown | |
| Deep Cut Post Office (historical) | Deep Cut Post Office (historical) | Auglaize | Unknown | |
| Buckland Post Office | Buckland Post Office | Auglaize | 846 | Moulton |
| Cridersville Post Office (historical) | Cridersville Post Office (historical) | Auglaize | 883 | Cridersville |
| New Hampshire Post Office | New Hampshire Post Office | Auglaize | 1033 | Waynesfield |
| Waynesfield Post Office | Waynesfield Post Office | Auglaize | 1060 | Waynesfield |
| Saint Johns Post Office | Saint Johns Post Office | Auglaize | 1017 | Uniopolis |
| Harbor Post Office (historical) | Harbor Post Office (historical) | Ashtabula | 630 | Ashtabula North |
| Harpersfield Post Office (historical) | Harpersfield Post Office (historical) | Ashtabula | 853 | Geneva |
| Hartsgrove Post Office (historical) | Hartsgrove Post Office (historical) | Ashtabula | 1027 | Windsor |
| Knowlton Post Office (historical) | Knowlton Post Office (historical) | Ashland | Unknown | |
| Santa Fe Post Office (historical) | Santa Fe Post Office (historical) | Auglaize | 1007 | Russells Point |
| Lovett Post Office (historical) | Lovett Post Office (historical) | Adams | Unknown | |
| Lakefork Post Office (historical) | Lakefork Post Office (historical) | Ashland | 1037 | Loudonville |
| Widowville Post Office (historical) | Widowville Post Office (historical) | Ashland | 1296 | Perrysville |
| Monroe Center Post Office (historical) | Monroe Center Post Office (historical) | Ashtabula | 912 | Pierpont |
| Kellogsville Post Office (historical) | Kellogsville Post Office (historical) | Ashtabula | 840 | Pierpont |
| Richmond Center Post Office (historical) | Richmond Center Post Office (historical) | Ashtabula | 1020 | Leon |
| Leon Post Office (historical) | Leon Post Office (historical) | Ashtabula | 1099 | Leon |
| Munson Hill Post Office (historical) | Munson Hill Post Office (historical) | Ashtabula | 869 | Ashtabula South |
| Mechanicsville Post Office (historical) | Mechanicsville Post Office (historical) | Ashtabula | 774 | Geneva |
| New Lyme Station Post Office (historical) | New Lyme Station Post Office (historical) | Ashtabula | 948 | Orwell |
| Padanarum Post Office (historical) | Padanarum Post Office (historical) | Ashtabula | 1020 | Leon |
| Pierpont Centre Post Office (historical) | Pierpont Centre Post Office (historical) | Ashtabula | 1001 | Leon |
| Riggs Post Office (historical) | Riggs Post Office (historical) | Ashtabula | 1014 | Pierpont |
| Rockcreek Station Post Office (historical) | Rockcreek Station Post Office (historical) | Ashtabula | Unknown | |
| Rowenton Post Office (historical) | Rowenton Post Office (historical) | Ashtabula | 1001 | Dorset |
| Saybrook Post Office (historical) | Saybrook Post Office (historical) | Ashtabula | 781 | Jefferson |
| Sentinel Post Office (historical) | Sentinel Post Office (historical) | Ashtabula | 1030 | Dorset |
| Pleasanton Post Office (historical) | Pleasanton Post Office (historical) | Athens | 951 | Shade |
| Olbers Post Office (historical) | Olbers Post Office (historical) | Athens | 896 | Jacksonville |
| Oakdale Post Office (historical) | Oakdale Post Office (historical) | Athens | 705 | Corning |
| New England Post Office (historical) | New England Post Office (historical) | Athens | 787 | Stewart |
| Modoc Post Office (historical) | Modoc Post Office (historical) | Athens | 741 | Nelsonville |
| Mineral Post Office (historical) | Mineral Post Office (historical) | Athens | 732 | Mineral |
| Kings Post Office (historical) | Kings Post Office (historical) | Athens | Unknown | |
| Ship Post Office (historical) | Ship Post Office (historical) | Ashtabula | 1066 | Pierpont |
| Stanhope Post Office (historical) | Stanhope Post Office (historical) | Ashtabula | 1024 | Kinsman |
| Steamburg Post Office (historical) | Steamburg Post Office (historical) | Ashtabula | 1010 | Leon |
| Stoneville Post Office (historical) | Stoneville Post Office (historical) | Ashtabula | 1024 | Windsor |
| Trumbull Post Office (historical) | Trumbull Post Office (historical) | Ashtabula | 991 | East Trumbull |
| West Andover Post Office (historical) | West Andover Post Office (historical) | Ashtabula | 1050 | Andover |
| Wick Post Office (historical) | Wick Post Office (historical) | Ashtabula | 997 | Cherry Valley |
| Williamsfield Post Office (historical) | Williamsfield Post Office (historical) | Ashtabula | Unknown | |
| Windsor Mills Post Office (historical) | Windsor Mills Post Office (historical) | Ashtabula | 1017 | Windsor |
| South Ridge Post Office (historical) | South Ridge Post Office (historical) | Ashtabula | Unknown | |
| Phoenix Post Office (historical) | Phoenix Post Office (historical) | Ashtabula | Unknown | |
| Osbornville Post Office (historical) | Osbornville Post Office (historical) | Ashtabula | Unknown | |
| Northway Post Office (historical) | Northway Post Office (historical) | Ashtabula | Unknown | |
| North Sheffield Post Office (historical) | North Sheffield Post Office (historical) | Ashtabula | Unknown | |
| Middlesex Post Office (historical) | Middlesex Post Office (historical) | Ashtabula | Unknown | |
| Lindenville Post Office (historical) | Lindenville Post Office (historical) | Ashtabula | Unknown | |
| Mather Post Office (historical) | Mather Post Office (historical) | Ashtabula | Unknown | |
| Lenox Post Office (historical) | Lenox Post Office (historical) | Ashtabula | Unknown | |
| Jester Post Office (historical) | Jester Post Office (historical) | Ashtabula | Unknown | |
| Iona Post Office (historical) | Iona Post Office (historical) | Ashtabula | Unknown | |
| Griggs Corners Post Office (historical) | Griggs Corners Post Office (historical) | Ashtabula | Unknown | |
| Atlas Post Office (historical) | Atlas Post Office (historical) | Belmont | Unknown | |
| Ambler Post Office (historical) | Ambler Post Office (historical) | Belmont | Unknown | |
| Burley's Mills Post Office (historical) | Burley's Mills Post Office (historical) | Belmont | Unknown | |
| Lucile Post Office (historical) | Lucile Post Office (historical) | Belmont | Unknown | |
| Demos Post Office (historical) | Demos Post Office (historical) | Belmont | Unknown | |
| Don Post Office (historical) | Don Post Office (historical) | Belmont | Unknown | |
| Dora Post Office (historical) | Dora Post Office (historical) | Belmont | Unknown | |
| Drill Post Office (historical) | Drill Post Office (historical) | Belmont | Unknown | |
| Eckel's Post Office (historical) | Eckel's Post Office (historical) | Belmont | Unknown | |
| Egypt Mills Post Office (historical) | Egypt Mills Post Office (historical) | Belmont | Unknown | |
| Hendershot Post Office (historical) | Hendershot Post Office (historical) | Belmont | Unknown | |
| Henderson Post Office (historical) | Henderson Post Office (historical) | Belmont | Unknown | |
| Compher Post Office (historical) | Compher Post Office (historical) | Belmont | Unknown | |
| Cope Post Office (historical) | Cope Post Office (historical) | Belmont | Unknown | |
| Crabapple Post Office (historical) | Crabapple Post Office (historical) | Belmont | Unknown | |
| Brownsfield Post Office (historical) | Brownsfield Post Office (historical) | Belmont | Unknown | |
| McClainville Post Office (historical) | McClainville Post Office (historical) | Belmont | 689 | Lansing |
| Speidel Post Office (historical) | Speidel Post Office (historical) | Belmont | 1257 | Bethesda |
| West Wheeling Post Office (historical) | West Wheeling Post Office (historical) | Belmont | 991 | Wheeling |
| Pleasant Grove Post Office (historical) | Pleasant Grove Post Office (historical) | Belmont | 1171 | Dillonvale |
| Olivett Post Office | Olivett Post Office | Belmont | 1247 | Fairview |
| Morning View Post Office (historical) | Morning View Post Office (historical) | Belmont | 1253 | Dillonvale |
| Lloydsville Post Office (historical) | Lloydsville Post Office (historical) | Belmont | 1175 | Saint Clairsville |
| Lamira Post Office (historical) | Lamira Post Office (historical) | Belmont | 1010 | Saint Clairsville |
| Hunter Post Office (historical) | Hunter Post Office (historical) | Belmont | 1188 | Hunter |
| Kelsey Post Office (historical) | Kelsey Post Office (historical) | Belmont | 1355 | Armstrongs Mills |
| Kennon Post Office (historical) | Kennon Post Office (historical) | Belmont | 974 | Flushing |
| Key Post Office (historical) | Key Post Office (historical) | Belmont | 1276 | Businessburg |
| Heath Post Office (historical) | Heath Post Office (historical) | Belmont | 850 | Businessburg |
| Golda Post Office (historical) | Golda Post Office (historical) | Belmont | 1050 | Piedmont |
| Egypt Post Office (historical) | Egypt Post Office (historical) | Belmont | 928 | Fairview |
| East Richland Post Office (historical) | East Richland Post Office (historical) | Belmont | 1175 | Saint Clairsville |
| Dorsey Post Office (historical) | Dorsey Post Office (historical) | Belmont | 804 | Armstrongs Mills |
| Maynard Post Office | Maynard Post Office | Belmont | 843 | Saint Clairsville |
| Lafferty Post Office | Lafferty Post Office | Belmont | 1050 | Bethesda |
| Hendrysburg Post Office | Hendrysburg Post Office | Belmont | 1017 | Fairview |
| Blaine Post Office | Blaine Post Office | Belmont | 761 | Lansing |
| Jacobsburg Post Office | Jacobsburg Post Office | Belmont | 1306 | Armstrongs Mills |
| Colerain Post Office | Colerain Post Office | Belmont | 1280 | Dillonvale |
| Fairpoint Post Office | Fairpoint Post Office | Belmont | 919 | Saint Clairsville |
| Flushing Post Office | Flushing Post Office | Belmont | 1253 | Flushing |
| Glencoe Post Office | Glencoe Post Office | Belmont | 837 | Saint Clairsville |
| Bethesda Post Office | Bethesda Post Office | Belmont | 1224 | Bethesda |
| Bannock Post Office | Bannock Post Office | Belmont | 984 | Saint Clairsville |
| Barton Post Office | Barton Post Office | Belmont | 801 | Lansing |
| Belmont Post Office | Belmont Post Office | Belmont | 1194 | Bethesda |
| Alledonia Post Office | Alledonia Post Office | Belmont | 830 | Armstrongs Mills |
| Armstrongs Mills Post Office | Armstrongs Mills Post Office | Belmont | 768 | Armstrongs Mills |
| Somerton Post Office | Somerton Post Office | Belmont | 1194 | Barnesville |
| Holloway Post Office | Holloway Post Office | Belmont | 945 | Piedmont |
| Lansing Post Office | Lansing Post Office | Belmont | 689 | Lansing |
| Powhatan Point Post Office | Powhatan Point Post Office | Belmont | 676 | Powhatan Point |
| Morristown Post Office | Morristown Post Office | Belmont | 1270 | Bethesda |
| Stewartsville Post Office | Stewartsville Post Office | Belmont | 919 | Lansing |
| Warnock Post Office | Warnock Post Office | Belmont | 932 | Saint Clairsville |
| Baileys Mills Post Office (historical) | Baileys Mills Post Office (historical) | Belmont | 942 | Barnesville |
| Anvil Post Office (historical) | Anvil Post Office (historical) | Belmont | 1286 | Businessburg |
| Cabinet Post Office (historical) | Cabinet Post Office (historical) | Belmont | 1217 | Fairview |
| Businessburg Post Office (historical) | Businessburg Post Office (historical) | Belmont | 823 | Businessburg |
| Captina Post Office (historical) | Captina Post Office (historical) | Belmont | 676 | Businessburg |
| Crescent Post Office (historical) | Crescent Post Office (historical) | Belmont | 807 | Lansing |
| Pilcher Post Office (historical) | Pilcher Post Office (historical) | Belmont | Unknown | |
| Oro Post Office (historical) | Oro Post Office (historical) | Belmont | Unknown | |
| Olive Hill Post Office (historical) | Olive Hill Post Office (historical) | Belmont | Unknown | |
| Klee Post Office (historical) | Klee Post Office (historical) | Belmont | Unknown | |
| Lampsville Post Office (historical) | Lampsville Post Office (historical) | Belmont | Unknown | |
| Long Run Post Office (historical) | Long Run Post Office (historical) | Belmont | Unknown | |
| Beachland Station Cleveland Post Office | Beachland Station Cleveland Post Office | Cuyahoga | 607 | East Cleveland |
| New Vienna Post Office | New Vienna Post Office | Clinton | 1115 | New Vienna |
| Sabina Post Office | Sabina Post Office | Clinton | 1050 | Sabina |
| North Olmsted Post Office | North Olmsted Post Office | Cuyahoga | 781 | North Olmsted |
| Strongsville Post Office (historical) | Strongsville Post Office (historical) | Cuyahoga | 971 | Berea |
| North Royalton Post Office (historical) | North Royalton Post Office (historical) | Cuyahoga | 1197 | Broadview Heights |
| Twinsburg Post Office | Twinsburg Post Office | Summit | 984 | Twinsburg |
| Antwerp Post Office | Antwerp Post Office | Paulding | 732 | Antwerp |
| Cecil Post Office | Cecil Post Office | Paulding | 722 | Paulding |
| Grover Hill Post Office | Grover Hill Post Office | Paulding | 725 | Oakwood |
| Latty Post Office | Latty Post Office | Paulding | 728 | Latty |
| Oakwood Post Office | Oakwood Post Office | Paulding | 709 | Oakwood |
| Ripley Post Office | Ripley Post Office | Brown | 505 | Maysville West |
| New Albany Post Office | New Albany Post Office | Franklin | 1020 | New Albany |
| Coldwater Post Office | Coldwater Post Office | Mercer | 909 | Coldwater |
| West Park Station Cleveland Post Office | West Park Station Cleveland Post Office | Cuyahoga | 758 | Lakewood |
| Blissfield Post Office | Blissfield Post Office | Coshocton | 797 | Killbuck |
| Conesville Post Office | Conesville Post Office | Coshocton | 745 | Conesville |
| Fresno Post Office | Fresno Post Office | Coshocton | 791 | Fresno |
| Plainfield Post Office | Plainfield Post Office | Coshocton | 801 | Plainfield |
| Walhonding Post Office | Walhonding Post Office | Coshocton | 889 | Walhonding |
| Warsaw Post Office | Warsaw Post Office | Coshocton | 797 | Warsaw |
| West Lafayette Post Office | West Lafayette Post Office | Coshocton | 804 | Coshocton |
| Dilles Bottom Pot Office (historical) | Dilles Bottom Pot Office (historical) | Belmont | 692 | Businessburg |
| Hawkeye Post Office (historical) | Hawkeye Post Office (historical) | Athens | Unknown | |
| Hixon Post Office (historical) | Hixon Post Office (historical) | Athens | Unknown | |
| Horton Post Office (historical) | Horton Post Office (historical) | Athens | Unknown | |
| Judson Post Office (historical) | Judson Post Office (historical) | Athens | Unknown | |
| Linscotts Post Office (historical) | Linscotts Post Office (historical) | Athens | Unknown | |
| Lick Run Post Office (historical) | Lick Run Post Office (historical) | Athens | Unknown | |
| Lick Ridge Post Office (historical) | Lick Ridge Post Office (historical) | Athens | Unknown | |
| Latrobe Post Office (historical) | Latrobe Post Office (historical) | Athens | Unknown | |
| Lathrop Post Office (historical) | Lathrop Post Office (historical) | Athens | Unknown | |
| Lyda Post Office (historical) | Lyda Post Office (historical) | Athens | Unknown | |
| Lowry Post Office (historical) | Lowry Post Office (historical) | Athens | Unknown | |
| Medill Post Office (historical) | Medill Post Office (historical) | Athens | Unknown | |
| Marchmont Post Office (historical) | Marchmont Post Office (historical) | Athens | Unknown | |
| Hartleyville Post Office (historical) | Hartleyville Post Office (historical) | Athens | 722 | Corning |
| Glenebon Post Office (historical) | Glenebon Post Office (historical) | Athens | 755 | Nelsonville |
| Garden Post Office (historical) | Garden Post Office (historical) | Athens | 669 | Alfred |
| Frost Post Office (historical) | Frost Post Office (historical) | Athens | 591 | Cutler |
| Hebbardsville Post Office (historical) | Hebbardsville Post Office (historical) | Athens | 738 | The Plains |
| Hollister Post Office (historical) | Hollister Post Office (historical) | Athens | 712 | Corning |
| Hocking Post Office (historical) | Hocking Post Office (historical) | Athens | 741 | Mineral |
| Hull Post Office (historical) | Hull Post Office (historical) | Athens | 807 | Stewart |
| Kimberly Post Office (historical) | Kimberly Post Office (historical) | Athens | 676 | Nelsonville |
| Lottridge Post Office (historical) | Lottridge Post Office (historical) | Athens | 738 | Alfred |
| Lysander Post Office (historical) | Lysander Post Office (historical) | Athens | 797 | Athens |
| Millfield Post Office (historical) | Millfield Post Office (historical) | Athens | 679 | Jacksonville |
| Hamley Run Post Office (historical) | Hamley Run Post Office (historical) | Athens | 663 | Nelsonville |
| Kilvert Post Office (historical) | Kilvert Post Office (historical) | Athens | 597 | Stewart |
| Wallace Post Office (historical) | Wallace Post Office (historical) | Belmont | Unknown | |
| Upland Post Office (historical) | Upland Post Office (historical) | Belmont | Unknown | |
| Uniontown Post Office (historical) | Uniontown Post Office (historical) | Belmont | 1204 | Harrisville |
| Steel Post Office (historical) | Steel Post Office (historical) | Belmont | Unknown | |
| Raineys Station Post Office (historical) | Raineys Station Post Office (historical) | Belmont | Unknown | |
| Ramage Post Office (historical) | Ramage Post Office (historical) | Belmont | Unknown | |
| Wheatland Mills Post Office (historical) | Wheatland Mills Post Office (historical) | Belmont | Unknown | |
| Samos Post Office (historical) | Samos Post Office (historical) | Belmont | Unknown | |
| Whitney Post Office (historical) | Whitney Post Office (historical) | Belmont | 909 | Saint Clairsville |
| Wegee Post Office (historical) | Wegee Post Office (historical) | Belmont | 656 | Businessburg |
| Vallonia Post Office (historical) | Vallonia Post Office (historical) | Belmont | 974 | Businessburg |
| Vadis Post Office (historical) | Vadis Post Office (historical) | Belmont | 705 | Businessburg |
| Tacoma Post Office (historical) | Tacoma Post Office (historical) | Belmont | 1299 | Hunter |
| Temperanceville Post Office (historical) | Temperanceville Post Office (historical) | Belmont | 958 | Barnesville |
| Sewellsville Post Office (historical) | Sewellsville Post Office (historical) | Belmont | 1325 | Fairview |
| Sheperdstown Post Office (historical) | Sheperdstown Post Office (historical) | Belmont | 1197 | Harrisville |
| Winton Post Office (historical) | Winton Post Office (historical) | Butler | Unknown | |
| Trumandale Post Office (historical) | Trumandale Post Office (historical) | Butler | Unknown | |
| Jericho Post Office (historical) | Jericho Post Office (historical) | Butler | Unknown | |
| Mount Auburn Post Office (historical) | Mount Auburn Post Office (historical) | Butler | Unknown | |
| Jacksonboro Post Office (historical) | Jacksonboro Post Office (historical) | Butler | Unknown | |
| Selkirk Post Office (historical) | Selkirk Post Office (historical) | Butler | Unknown | |
| Rossville Post Office (historical) | Rossville Post Office (historical) | Butler | Unknown | |
| Philanthropy Post Office (historical) | Philanthropy Post Office (historical) | Butler | Unknown | |
| Wood Post Office (historical) | Wood Post Office (historical) | Butler | Unknown | |
| Isis Post Office (historical) | Isis Post Office (historical) | Butler | Unknown | |
| Woodsdale Post Office (historical) | Woodsdale Post Office (historical) | Butler | 620 | Trenton |
| Tylersville Post Office (historical) | Tylersville Post Office (historical) | Butler | 840 | Glendale |
| Symmes Corners Post Office (historical) | Symmes Corners Post Office (historical) | Butler | 584 | Greenhills |
| Stockton Post Office (historical) | Stockton Post Office (historical) | Butler | 699 | Greenhills |
| Saint Charles Post Office (historical) | Saint Charles Post Office (historical) | Butler | 922 | Millville |
| Rialto Post Office (historical) | Rialto Post Office (historical) | Butler | 604 | Glendale |
| Reily Post Office (historical) | Reily Post Office (historical) | Butler | 745 | Reily |
| Port Union Post Office (historical) | Port Union Post Office (historical) | Butler | 597 | Glendale |
| Poast Town Post Office (historical) | Poast Town Post Office (historical) | Butler | 656 | Middletown |
| Pisgah Post Office (historical) | Pisgah Post Office (historical) | Butler | 961 | Mason |
| Maud Post Office (historical) | Maud Post Office (historical) | Butler | 823 | Glendale |
| Lemon Post Office (historical) | Lemon Post Office (historical) | Butler | 771 | Monroe |
| Ogleton Post Office (historical) | Ogleton Post Office (historical) | Butler | 925 | Millville |
| Miltonville Post Office (historical) | Miltonville Post Office (historical) | Butler | 669 | Middletown |
| Millville Post Office (historical) | Millville Post Office (historical) | Butler | 620 | Millville |
| McGonigle Post Office (historical) | McGonigle Post Office (historical) | Butler | 912 | Millville |
| Hughes Post Office (historical) | Hughes Post Office (historical) | Butler | 718 | Trenton |
| Zebra Post Office (historical) | Zebra Post Office (historical) | Belmont | Unknown | |
| Saint Paris Post Office | Saint Paris Post Office | Champaign | 1204 | Saint Paris |
| Westville Post Office | Westville Post Office | Champaign | 1017 | Urbana West |
| Woodstock Post Office | Woodstock Post Office | Champaign | 1158 | Mechanicsburg |
| Cable Post Office | Cable Post Office | Champaign | 1171 | Kingscreek |
| Christiansburg Post Office | Christiansburg Post Office | Champaign | 1112 | Christiansburg |
| Mingo Post Office | Mingo Post Office | Champaign | 1201 | Kingscreek |
| North Lewisburg Post Office | North Lewisburg Post Office | Champaign | 1083 | North Lewisburg |
| Rosewood Post Office | Rosewood Post Office | Champaign | 1132 | Saint Paris |
| Algonquin Post Office (historical) | Algonquin Post Office (historical) | Carroll | Unknown | |
| Cabello Post Office (historical) | Cabello Post Office (historical) | Carroll | Unknown | |
| Davis Post Office (historical) | Davis Post Office (historical) | Carroll | Unknown | |
| Dohrman Post Office (historical) | Dohrman Post Office (historical) | Carroll | Unknown | |
| Figleys Mill Post Office (historical) | Figleys Mill Post Office (historical) | Carroll | Unknown | |
| Gortin Post Office (historical) | Gortin Post Office (historical) | Carroll | Unknown | |
| Hickory Post Office (historical) | Hickory Post Office (historical) | Carroll | Unknown | |
| Lajoie Post Office (historical) | Lajoie Post Office (historical) | Carroll | Unknown | |
| North Union Post Office (historical) | North Union Post Office (historical) | Carroll | Unknown | |
| Pekin Post Office (historical) | Pekin Post Office (historical) | Carroll | 1030 | Minerva |
| Prime Post Office (historical) | Prime Post Office (historical) | Carroll | Unknown | |
| Rocktown Post Office (historical) | Rocktown Post Office (historical) | Carroll | Unknown | |
| Rose Post Office (historical) | Rose Post Office (historical) | Carroll | Unknown | |
| Shobers Mills Post Office (historical) | Shobers Mills Post Office (historical) | Carroll | Unknown | |
| Augusta Post Office | Augusta Post Office | Carroll | 1234 | Minerva |
| Carrollton Post Office | Carrollton Post Office | Carroll | 1115 | Carrollton |
| Dellroy Post Office | Dellroy Post Office | Carroll | 961 | Dellroy |
| Harlem Springs Post Office | Harlem Springs Post Office | Carroll | 1240 | Carrollton |
| Leesville Post Office | Leesville Post Office | Carroll | 994 | Bowerston |
| Malvern Post Office | Malvern Post Office | Carroll | 991 | Malvern |
| Mechanicstown Post Office | Mechanicstown Post Office | Carroll | 1234 | Bergholz |
| Sherrodsville Post Office | Sherrodsville Post Office | Carroll | 912 | Bowerston |
| College Corner Post Office | College Corner Post Office | Butler | 984 | College Corner |
| Collinsville Post Office | Collinsville Post Office | Butler | 702 | West Elkton |
| Hamilton Post Office | Hamilton Post Office | Butler | 597 | Hamilton |
| Monroe Post Office | Monroe Post Office | Butler | 823 | Monroe |
| Okeana Post Office | Okeana Post Office | Butler | 640 | Harrison |
| Overpeck Post Office | Overpeck Post Office | Butler | 633 | Hamilton |
| Oxford Post Office | Oxford Post Office | Butler | 922 | Oxford |
| Seven Mile Post Office | Seven Mile Post Office | Butler | 656 | Hamilton |
| Somerville Post Office | Somerville Post Office | Butler | 768 | Oxford |
| Trenton Post Office | Trenton Post Office | Butler | 650 | Trenton |
| Alert Post Office (historical) | Alert Post Office (historical) | Butler | 643 | Harrison |
| Astoria Post Office (historical) | Astoria Post Office (historical) | Butler | 814 | Middletown |
| Bethany Post Office (historical) | Bethany Post Office (historical) | Butler | 837 | Monroe |
| Blueball Post Office (historical) | Blueball Post Office (historical) | Butler | 748 | Monroe |
| Bunkerhill Post Office (historical) | Bunkerhill Post Office (historical) | Butler | 679 | Millville |
| West Chester Post Office | West Chester Post Office | Butler | 659 | Glendale |
| Christiana Post Office (historical) | Christiana Post Office (historical) | Butler | Unknown | |
| Clawson Post Office (historical) | Clawson Post Office (historical) | Butler | Unknown | |
| Clinton Post Office (historical) | Clinton Post Office (historical) | Butler | Unknown | |
| Ross Post Office | Ross Post Office | Butler | 554 | Shandon |
| Contreras Post Office (historical) | Contreras Post Office (historical) | Butler | 955 | College Corner |
| Darrtown Post Office (historical) | Darrtown Post Office (historical) | Butler | 738 | Millville |
| Excello Post Office (historical) | Excello Post Office (historical) | Butler | 630 | Trenton |
| GanoPost Office (historical) | GanoPost Office (historical) | Butler | 669 | Glendale |
| Shandon Post Office | Shandon Post Office | Butler | 600 | Shandon |
| West Middletown Post Office (historical) | West Middletown Post Office (historical) | Butler | 650 | Middletown |
| Palermo Post Office (historical) | Palermo Post Office (historical) | Carroll | 1240 | Bowerston |
| Middleburgh Post Office (historical) | Middleburgh Post Office (historical) | Champaign | Unknown | |
| Kennard Post Office (historical) | Kennard Post Office (historical) | Champaign | 1171 | Kingscreek |
| Kings Creek Post Office (historical) | Kings Creek Post Office (historical) | Champaign | 1073 | Kingscreek |
| Lippincott Post Office (historical) | Lippincott Post Office (historical) | Champaign | 1060 | Northville |
| Eris Post Office (historical) | Eris Post Office (historical) | Champaign | 1099 | Northville |
| Fountain Park Post Office (historical) | Fountain Park Post Office (historical) | Champaign | 1093 | North Lewisburg |
| Carysville Post Office (historical) | Carysville Post Office (historical) | Champaign | 1129 | Saint Paris |
| Crayon Post Office (historical) | Crayon Post Office (historical) | Champaign | 1132 | Saint Paris |
| Darnell Post Office (historical) | Darnell Post Office (historical) | Champaign | 1132 | Saint Paris |
| Baker Post Office (historical) | Baker Post Office (historical) | Champaign | Unknown | |
| Bakers Post Office (historical) | Bakers Post Office (historical) | Champaign | Unknown | |
| Brinton Post Office (historical) | Brinton Post Office (historical) | Champaign | Unknown | |
| Millerstown Post Office (historical) | Millerstown Post Office (historical) | Champaign | 1112 | Saint Paris |
| Muddy Creek Post Office (historical) | Muddy Creek Post Office (historical) | Champaign | Unknown | |
| Mutual Post Office (historical) | Mutual Post Office (historical) | Champaign | 1184 | Urbana East |
| Nettleton Post Office (historical) | Nettleton Post Office (historical) | Champaign | 1043 | Urbana West |
| Northville Post Office (historical) | Northville Post Office (historical) | Champaign | 1050 | Northville |
| Reynolds Post Office (historical) | Reynolds Post Office (historical) | Champaign | Unknown | |
| Springhill Post Office (historical) | Springhill Post Office (historical) | Champaign | 1060 | Bellefontaine |
| Steinberger Post Office (historical) | Steinberger Post Office (historical) | Champaign | Unknown | |
| Terre Haute Post Office (historical) | Terre Haute Post Office (historical) | Champaign | 1086 | Thackery |
| Thackery Post Office (historical) | Thackery Post Office (historical) | Champaign | 1115 | Thackery |
| Twintown Post Office (historical) | Twintown Post Office (historical) | Champaign | Unknown | |
| Tyffe Post Office (historical) | Tyffe Post Office (historical) | Champaign | Unknown | |
| Aberdeen Post Office | Aberdeen Post Office | Brown | 515 | Maysville West |
| Decatur Post Office | Decatur Post Office | Brown | 922 | Decatur |
| Fayetteville Post Office | Fayetteville Post Office | Brown | 948 | Fayetteville |
| Feesburg Post Office | Feesburg Post Office | Brown | 932 | Hamersville |
| Georgetown Post Office | Georgetown Post Office | Brown | 915 | Higginsport |
| Hagenbaugh Post Office (historical) | Hagenbaugh Post Office (historical) | Brown | 965 | Hamersville |
| Higginsport Post Office | Higginsport Post Office | Brown | 515 | Higginsport |
| Macon Post Office | Macon Post Office | Brown | 1076 | Winchester |
| Mount Orab Post Office | Mount Orab Post Office | Brown | 938 | Mount Orab |
| Russelville Post Office | Russelville Post Office | Brown | 971 | Russellville |
| Saint Martin Post Office | Saint Martin Post Office | Brown | 978 | Fayetteville |
| Sardinia Post Office | Sardinia Post Office | Brown | 961 | Sardinia |
| Ashridge Post Office (historical) | Ashridge Post Office (historical) | Brown | 1024 | Ash Ridge |
| Bardwell Post Office (historical) | Bardwell Post Office (historical) | Brown | 938 | Mount Orab |
| Bloom Rose Post Office (historical) | Bloom Rose Post Office (historical) | Brown | 892 | Mount Orab |
| Boudesferry Post Office (historical) | Boudesferry Post Office (historical) | Brown | Unknown | |
| Browntown Post Office (historical) | Browntown Post Office (historical) | Brown | 958 | Ash Ridge |
| Cedarville Post Office (historical) | Cedarville Post Office (historical) | Brown | Unknown | |
| Center Point Post Office (historical) | Center Point Post Office (historical) | Brown | Unknown | |
| Centre Point Post Office (historical) | Centre Point Post Office (historical) | Brown | Unknown | |
| Chasetown Post Office (historical) | Chasetown Post Office (historical) | Brown | 938 | Fayetteville |
| Clover Valley Post Office (historical) | Clover Valley Post Office (historical) | Brown | Unknown | |
| Crosstown Post Office (historical) | Crosstown Post Office (historical) | Brown | 912 | Williamsburg |
| De La Palma Post Office (historical) | De La Palma Post Office (historical) | Brown | Unknown | |
| Delapalma Post Office (historical) | Delapalma Post Office (historical) | Brown | Unknown | |
| Desoto Post Office (historical) | Desoto Post Office (historical) | Brown | Unknown | |
| Eagle Creek Post Office (historical) | Eagle Creek Post Office (historical) | Brown | Unknown | |
| Eastwood Post Office (historical) | Eastwood Post Office (historical) | Brown | 932 | Mount Orab |
| Ellsberry Post Office (historical) | Ellsberry Post Office (historical) | Brown | 577 | Maysville East |
| Fivemile Post Office (historical) | Fivemile Post Office (historical) | Brown | 951 | Mount Orab |
| Gerta Post Office (historical) | Gerta Post Office (historical) | Brown | Unknown | |
| Hiett Post Office (historical) | Hiett Post Office (historical) | Brown | 804 | Maysville East |
| Horrs Post Office (historical) | Horrs Post Office (historical) | Champaign | Unknown | |
| Lookout Post Office (historical) | Lookout Post Office (historical) | Champaign | Unknown | |
| Felicity Post Office | Felicity Post Office | Clermont | 919 | Felicity |
| Goshen Post Office | Goshen Post Office | Clermont | 840 | Goshen |
| Marathon Post Office | Marathon Post Office | Clermont | 919 | Newtonsville |
| Miamiville Post Office | Miamiville Post Office | Clermont | 587 | Madeira |
| Milford Post Office | Milford Post Office | Clermont | 558 | Madeira |
| Amelia Post Office | Amelia Post Office | Clermont | 876 | Batavia |
| Batavia Post Office | Batavia Post Office | Clermont | 594 | Batavia |
| Branch Hill Post Office | Branch Hill Post Office | Clermont | 587 | Madeira |
| Chilo Post Office | Chilo Post Office | Clermont | 502 | Moscow |
| Edenton Post Office | Edenton Post Office | Clermont | 906 | Newtonsville |
| Levana Post Office (historical) | Levana Post Office (historical) | Brown | Unknown | |
| Levanna Post Office (historical) | Levanna Post Office (historical) | Brown | 837 | Germantown |
| Lewis Post Office (historical) | Lewis Post Office (historical) | Brown | Unknown | |
| Lewis' Cross Roads Post Office (historical) | Lewis' Cross Roads Post Office (historical) | Brown | Unknown | |
| Locustridge Post Office (historical) | Locustridge Post Office (historical) | Brown | 915 | Bethel |
| Logans Gap Post Office (historical) | Logans Gap Post Office (historical) | Brown | Unknown | |
| Maple Post Office (historical) | Maple Post Office (historical) | Brown | 938 | Bethel |
| Neel Post Office (historical) | Neel Post Office (historical) | Brown | 617 | Decatur |
| New Harmony Post Office (historical) | New Harmony Post Office (historical) | Brown | 912 | Williamsburg |
| Newhope Post Office (historical) | Newhope Post Office (historical) | Brown | 886 | Hamersville |
| O'Connors Post Office (historical) | O'Connors Post Office (historical) | Brown | Unknown | |
| Prall Post Office (historical) | Prall Post Office (historical) | Brown | Unknown | |
| Puebla Post Office (historical) | Puebla Post Office (historical) | Brown | Unknown | |
| Red Oak Post Office (historical) | Red Oak Post Office (historical) | Brown | 892 | Russellville |
| Scofield Post Office (historical) | Scofield Post Office (historical) | Brown | Unknown | |
| Skiffsville Post Office (historical) | Skiffsville Post Office (historical) | Brown | Unknown | |
| Straight Creek Post Office (historical) | Straight Creek Post Office (historical) | Brown | Unknown | |
| Strait Creek Post Office (historical) | Strait Creek Post Office (historical) | Brown | Unknown | |
| Sunshine Post Office (historical) | Sunshine Post Office (historical) | Brown | 866 | Hamersville |
| Surryville Post Office (historical) | Surryville Post Office (historical) | Brown | Unknown | |
| Todds Run Post Office (historical) | Todds Run Post Office (historical) | Brown | Unknown | |
| Union Plain Post Office (historical) | Union Plain Post Office (historical) | Brown | Unknown | |
| Veracruz Post Office (historical) | Veracruz Post Office (historical) | Brown | 938 | Fayetteville |
| Wallsburg Post Office (historical) | Wallsburg Post Office (historical) | Brown | Unknown | |
| White Oak Post Office (historical) | White Oak Post Office (historical) | Brown | 948 | Mount Orab |
| White Oak Valley Post Office (historical) | White Oak Valley Post Office (historical) | Brown | 797 | Hamersville |
| Wright Post Office (historical) | Wright Post Office (historical) | Brown | Unknown | |
| Perintown Post Office (historical) | Perintown Post Office (historical) | Clermont | 535 | Goshen |
| Merwin Post Office (historical) | Merwin Post Office (historical) | Clermont | 889 | Withamsville |
| New Palestine Post Office (historical) | New Palestine Post Office (historical) | Clermont | 482 | Withamsville |
| Lindale Post Office (historical) | Lindale Post Office (historical) | Clermont | 889 | Laurel |
| Locust Corner Post Office (historical) | Locust Corner Post Office (historical) | Clermont | 863 | Withamsville |
| Manila Post Office (historical) | Manila Post Office (historical) | Clermont | Unknown | |
| Hills Station Post Office (historical) | Hills Station Post Office (historical) | Clermont | Unknown | |
| Hulington Post Office (historical) | Hulington Post Office (historical) | Clermont | 860 | Laurel |
| Lerado Post Office (historical) | Lerado Post Office (historical) | Clermont | 942 | Newtonsville |
| Guinea Post Office (historical) | Guinea Post Office (historical) | Clermont | Unknown | |
| Hamlet Post Office (historical) | Hamlet Post Office (historical) | Clermont | 876 | Batavia |
| Hennings Mill Post Office (historical) | Hennings Mill Post Office (historical) | Clermont | 899 | Williamsburg |
| Funston Post Office (historical) | Funston Post Office (historical) | Clermont | Unknown | |
| Glen Este Post Office (historical) | Glen Este Post Office (historical) | Clermont | 846 | Withamsville |
| Glenrose Post Office (historical) | Glenrose Post Office (historical) | Clermont | Unknown | |
| Afton Post Office (historical) | Afton Post Office (historical) | Clermont | 889 | Williamsburg |
| Angola Post Office (historical) | Angola Post Office (historical) | Clermont | Unknown | |
| Baldwin Post Office (historical) | Baldwin Post Office (historical) | Clermont | Unknown | |
| Bantam Post Office (historical) | Bantam Post Office (historical) | Clermont | 863 | Laurel |
| Baywood Post Office (historical) | Baywood Post Office (historical) | Clermont | Unknown | |
| Belfast Post Office (historical) | Belfast Post Office (historical) | Clermont | 889 | Goshen |
| Mount Carmel Post Office (historical) | Mount Carmel Post Office (historical) | Clermont | 883 | Withamsville |
| Mount Holly Post Office (historical) | Mount Holly Post Office (historical) | Clermont | 879 | Batavia |
| Mount Olive Post Office (historical) | Mount Olive Post Office (historical) | Clermont | 879 | Bethel |
| Mount Pisgah Post Office (historical) | Mount Pisgah Post Office (historical) | Clermont | 814 | Laurel |
| Mulberry Post Office (historical) | Mulberry Post Office (historical) | Clermont | 843 | Goshen |
| Mount Repose Post Office (historical) | Mount Repose Post Office (historical) | Clermont | 866 | Goshen |
| Modest Post Office (historical) | Modest Post Office (historical) | Clermont | 886 | Newtonsville |
| Monterey Post Office (historical) | Monterey Post Office (historical) | Clermont | 902 | Newtonsville |
| Moores Fork Post Office | Moores Fork Post Office | Clermont | 938 | Newtonsville |
| Moscow Post Office | Moscow Post Office | Clermont | 495 | Moscow |
| Neville Post Office | Neville Post Office | Clermont | 499 | Moscow |
| New Richmond Post Office | New Richmond Post Office | Clermont | 492 | New Richmond |
| Newtonsville Post Office | Newtonsville Post Office | Clermont | 906 | Newtonsville |
| Owensville Post Office | Owensville Post Office | Clermont | 860 | Batavia |
| Point Pleasant Post Office | Point Pleasant Post Office | Clermont | 495 | Laurel |
| Williamsburg Post Office | Williamsburg Post Office | Clermont | 814 | Williamsburg |
| Seth Post Office (historical) | Seth Post Office (historical) | Clark | Unknown | |
| Snyderville Post Office (historical) | Snyderville Post Office (historical) | Clark | 889 | Donnelsville |
| Villa Post Office (historical) | Villa Post Office (historical) | Clark | 1086 | Springfield |
| Wiseman Post Office (historical) | Wiseman Post Office (historical) | Clark | Unknown | |
| North Hampton Post Office (historical) | North Hampton Post Office (historical) | Clark | 1096 | Donnelsville |
| South Charleston Post Office (historical) | South Charleston Post Office (historical) | Clark | 1125 | South Charleston |
| Anlo Post Office (historical) | Anlo Post Office (historical) | Clark | 958 | Donnelsville |
| Beatty Post Office (historical) | Beatty Post Office (historical) | Clark | 1014 | Springfield |
| Bowlusville Post Office (historical) | Bowlusville Post Office (historical) | Clark | Unknown | |
| Brighton Centre Post Office (historical) | Brighton Centre Post Office (historical) | Clark | Unknown | |
| Cold Springs Post Office (historical) | Cold Springs Post Office (historical) | Clark | Unknown | |
| Dialton Post Office (historical) | Dialton Post Office (historical) | Clark | 1152 | Thackery |
| Dilbert Post Office (historical) | Dilbert Post Office (historical) | Clark | Unknown | |
| Dodo Post Office (historical) | Dodo Post Office (historical) | Clark | 1027 | Donnelsville |
| South Vienna Post Office | South Vienna Post Office | Clark | 1197 | South Vienna |
| Catawba Post Office | Catawba Post Office | Clark | 1237 | South Vienna |
| Selma Post Office | Selma Post Office | Clark | 1102 | South Charleston |
| Donnelsville Post Office | Donnelsville Post Office | Clark | 928 | Donnelsville |
| Enon Post Office | Enon Post Office | Clark | 896 | Donnelsville |
| Eagle City Post Office (historical) | Eagle City Post Office (historical) | Clark | 922 | Springfield |
| Elden Post Office (historical) | Elden Post Office (historical) | Clark | Unknown | |
| Forgy Post Office (historical) | Forgy Post Office (historical) | Clark | 886 | Donnelsville |
| Greenopolis Post Office (historical) | Greenopolis Post Office (historical) | Clark | Unknown | |
| Harmony Post Office (historical) | Harmony Post Office (historical) | Clark | 1086 | New Moorefield |
| Hustead Post Office (historical) | Hustead Post Office (historical) | Clark | 1033 | Clifton |
| Lagonda Post Office (historical) | Lagonda Post Office (historical) | Clark | 958 | Springfield |
| Lawrenceville Post Office (historical) | Lawrenceville Post Office (historical) | Clark | 1109 | Donnelsville |
| Madriver Post Office (historical) | Madriver Post Office (historical) | Clark | 873 | Donnelsville |
| Pierceville Post Office (historical) | Pierceville Post Office (historical) | Clark | Unknown | |
| New Boston Post Office (historical) | New Boston Post Office (historical) | Clark | Unknown | |
| Tremont City Post Office | Tremont City Post Office | Clark | 955 | Urbana West |
| New Carlisle Post Office | New Carlisle Post Office | Clark | 909 | New Carlisle |
| Nice Post Office (historical) | Nice Post Office (historical) | Clermont | Unknown | |
| Nicholsville Post Office (historical) | Nicholsville Post Office (historical) | Clermont | 873 | Laurel |
| Ninemile Post Office (historical) | Ninemile Post Office (historical) | Clermont | 564 | Withamsville |
| Obanon Post Office (historical) | Obanon Post Office (historical) | Clermont | Unknown | |
| Olive Branch Post Office (historical) | Olive Branch Post Office (historical) | Clermont | 794 | Batavia |
| Ten Mile Post Office (historical) | Ten Mile Post Office (historical) | Clermont | Unknown | |
| Columbiana Post Office | Columbiana Post Office | Columbiana | 1152 | Columbiana |
| East Rochester Post Office | East Rochester Post Office | Columbiana | 1096 | Minerva |
| Elkton Post Office | Elkton Post Office | Columbiana | 896 | Elkton |
| Hanoverton | Hanoverton | Columbiana | 1132 | Hanoverton |
| Rural Post Office (historical) | Rural Post Office (historical) | Clermont | 482 | Felicity |
| Smith Landing Post Office (historical) | Smith Landing Post Office (historical) | Clermont | Unknown | |
| Pleasant Grove Post Office (historical) | Pleasant Grove Post Office (historical) | Clermont | Unknown | |
| Point Isabel Post Office (historical) | Point Isabel Post Office (historical) | Clermont | 883 | Laurel |
| Polktown Post Office (historical) | Polktown Post Office (historical) | Clermont | Unknown | |
| Spann Post Office (historical) | Spann Post Office (historical) | Clermont | 597 | Withamsville |
| Summerside Post Office (historical) | Summerside Post Office (historical) | Clermont | 869 | Withamsville |
| Stonelick Post Office (historical) | Stonelick Post Office (historical) | Clermont | 653 | Batavia |
| Tobasco Post Office (historical) | Tobasco Post Office (historical) | Clermont | 902 | Withamsville |
| Utopia Post Office (historical) | Utopia Post Office (historical) | Clermont | 515 | Felicity |
| West Woodville Post Office (historical) | West Woodville Post Office (historical) | Clermont | Unknown | |
| Wiggonsville Post Office (historical) | Wiggonsville Post Office (historical) | Clermont | 919 | Bethel |
| Withamsville Post Office (historical) | Withamsville Post Office (historical) | Clermont | 883 | Withamsville |
| Woodland Park Post Office (historical) | Woodland Park Post Office (historical) | Clermont | 902 | Newtonsville |
| Clarksville Post Office | Clarksville Post Office | Clinton | 814 | Clarksville |
| Cuba Post Office | Cuba Post Office | Clinton | 1024 | Martinsville |
| Lees Creek Post Office | Lees Creek Post Office | Clinton | 1096 | Sabina |
| Martinsville Post Office | Martinsville Post Office | Clinton | 1086 | Martinsville |
| Midland Post Office | Midland Post Office | Clinton | 988 | Blanchester |
| Port Williams Post Office | Port Williams Post Office | Clinton | 1020 | Port William |
| Reesville Post Office | Reesville Post Office | Clinton | 1073 | Sabina |
| Bloomington Post Office (historical) | Bloomington Post Office (historical) | Clinton | 1109 | New Vienna |
| Clare Post Office (historical) | Clare Post Office (historical) | Clinton | Unknown | |
| New Antioch Post Office (historical) | New Antioch Post Office (historical) | Clinton | 1066 | Sabina |
| Clinton Station Post Office (historical) | Clinton Station Post Office (historical) | Clinton | Unknown | |
| Farmers Station Post Office (historical) | Farmers Station Post Office (historical) | Clinton | 1056 | Martinsville |
| Gurneyville Post Office (historical) | Gurneyville Post Office (historical) | Clinton | 1053 | New Burlington |
| Harlan Post Office (historical) | Harlan Post Office (historical) | Clinton | Unknown | |
| Kingman Post Office (historical) | Kingman Post Office (historical) | Clinton | 978 | New Burlington |
| Lumberton Post Office (historical) | Lumberton Post Office (historical) | Clinton | 1014 | Port William |
| Macedonia Post Office (historical) | Macedonia Post Office (historical) | Clinton | Unknown | |
| McKay Station Post Office (historical) | McKay Station Post Office (historical) | Clinton | 1010 | New Burlington |
| Melvin Post Office (historical) | Melvin Post Office (historical) | Clinton | 1060 | Sabina |
| Memphis Post Office (historical) | Memphis Post Office (historical) | Clinton | 1102 | Memphis |
| Morrisville Post Office (historical) | Morrisville Post Office (historical) | Clinton | 1033 | Port William |
| New Burlington Post Office (historical) | New Burlington Post Office (historical) | Clinton | 896 | New Burlington |
| Oakland Post Office (historical) | Oakland Post Office (historical) | Clinton | 1007 | Clarksville |
| Ogden Post Office (historical) | Ogden Post Office (historical) | Clinton | 912 | Clarksville |
| Pansy Post Office (historical) | Pansy Post Office (historical) | Clinton | 974 | Blanchester |
| Quinns Mills Post Office (historical) | Quinns Mills Post Office (historical) | Clinton | Unknown | |
| Records Post Office (historical) | Records Post Office (historical) | Clinton | Unknown | |
| Snow Hill Post Office (historical) | Snow Hill Post Office (historical) | Clinton | 1122 | New Vienna |
| Ulm Post Office (historical) | Ulm Post Office (historical) | Clinton | Unknown | |
| Webertown Post Office (historical) | Webertown Post Office (historical) | Clinton | 1004 | Lynchburg |
| Westboro Post Office (historical) | Westboro Post Office (historical) | Clinton | 984 | Blanchester |
| Anchor Post Office (historical) | Anchor Post Office (historical) | Columbiana | 833 | East Palestine |
| Adair Post Office (historical) | Adair Post Office (historical) | Columbiana | 1201 | Hanoverton |
| Azelda Post Office (historical) | Azelda Post Office (historical) | Columbiana | Unknown | |
| Rock Camp Post Office (historical) | Rock Camp Post Office (historical) | Columbiana | 1010 | West Point |
| Saint Clair Post Office (historical) | Saint Clair Post Office (historical) | Columbiana | Unknown | |
| Signal Post Office (historical) | Signal Post Office (historical) | Columbiana | 1112 | Elkton |
| Spruce Vale Post Office (historical) | Spruce Vale Post Office (historical) | Columbiana | Unknown | |
| Sprucevale Post Office (historical) | Sprucevale Post Office (historical) | Columbiana | 791 | East Liverpool North |
| Teegarden Post Office (historical) | Teegarden Post Office (historical) | Columbiana | 1076 | Lisbon |
| Unity Post Office (historical) | Unity Post Office (historical) | Columbiana | 1217 | East Palestine |
| Valley Post Office (historical) | Valley Post Office (historical) | Columbiana | 1145 | Hanoverton |
| Vulcan Post Office (historical) | Vulcan Post Office (historical) | Columbiana | 682 | Wellsville |
| Walkers Post Office (historical) | Walkers Post Office (historical) | Columbiana | 686 | East Liverpool South |
| West Beaver Post Office (historical) | West Beaver Post Office (historical) | Columbiana | Unknown | |
| North Birmingham Post Office (historical) | North Birmingham Post Office (historical) | Columbiana | Unknown | |
| O'Connell Post Office (historical) | O'Connell Post Office (historical) | Columbiana | Unknown | |
| Park Post Office (historical) | Park Post Office (historical) | Columbiana | Unknown | |
| Westpoint Post Office (historical) | Westpoint Post Office (historical) | Columbiana | 932 | West Point |
| Chatfield Post Office | Chatfield Post Office | Crawford | 984 | Chatfield |
| Crestline Post Office | Crestline Post Office | Crawford | 1148 | Crestline |
| New Washington Post Office | New Washington Post Office | Crawford | 994 | New Washington |
| North Robinson Post Office | North Robinson Post Office | Crawford | 1066 | North Robinson |
| Oscola Post Office | Oscola Post Office | Crawford | 928 | Oceola |
| Sulphur Springs Post Office | Sulphur Springs Post Office | Crawford | 1027 | Bucyrus |
| Tiro Post Office | Tiro Post Office | Crawford | 1053 | New Washington |
| Lykens Post Office (historical) | Lykens Post Office (historical) | Crawford | 955 | Lykens |
| Monnett Post Office (historical) | Monnett Post Office (historical) | Crawford | 974 | Monnett |
| New Winchester Post Office (historical) | New Winchester Post Office (historical) | Crawford | 1027 | Caledonia |
| North Auburn Post Office (historical) | North Auburn Post Office (historical) | Crawford | 961 | New Washington |
| Leepersville Post Office (historical) | Leepersville Post Office (historical) | Crawford | Unknown | |
| Leessville Cross Roads Post Office (historical) | Leessville Cross Roads Post Office (historical) | Crawford | Unknown | |
| Lemert Post Office (historical) | Lemert Post Office (historical) | Crawford | 981 | Lykens |
| Lost Creek Post Office (historical) | Lost Creek Post Office (historical) | Crawford | Unknown | |
| Liberty Corners Post Office (historical) | Liberty Corners Post Office (historical) | Crawford | Unknown | |
| De Kalb Post Office (historical) | De Kalb Post Office (historical) | Crawford | 1083 | New Washington |
| Grove Hill Post Office (historical) | Grove Hill Post Office (historical) | Crawford | Unknown | |
| Hotts Corners Post Office (historical) | Hotts Corners Post Office (historical) | Crawford | Unknown | |
| Biddle Mills Post Office (historical) | Biddle Mills Post Office (historical) | Crawford | 1063 | North Robinson |
| Brandywine Post Office (historical) | Brandywine Post Office (historical) | Crawford | 1017 | Bucyrus |
| Brokensword Post Office (historical) | Brokensword Post Office (historical) | Crawford | 994 | Lykens |
| Camp Run Post Office (historical) | Camp Run Post Office (historical) | Crawford | Unknown | |
| Wellerville Post Office (historical) | Wellerville Post Office (historical) | Crawford | Unknown | |
| Barry Post Office (historical) | Barry Post Office (historical) | Cuyahoga | Unknown | |
| Bay Village Post Office (historical) | Bay Village Post Office (historical) | Cuyahoga | 633 | North Olmsted |
| Bedford Post Office (historical) | Bedford Post Office (historical) | Cuyahoga | 951 | Shaker Heights |
| Bement Post Office (historical) | Bement Post Office (historical) | Cuyahoga | 732 | North Olmsted |
| Binola Post Office (historical) | Binola Post Office (historical) | Cuyahoga | 863 | Berea |
| Bluestone Post Office (historical) | Bluestone Post Office (historical) | Cuyahoga | 873 | East Cleveland |
| Brecksville Centre Post Office (historical) | Brecksville Centre Post Office (historical) | Cuyahoga | 886 | Broadview Heights |
| Ohio City Post Office (historical) | Ohio City Post Office (historical) | Cuyahoga | 682 | Cleveland South |
| Brooklyn Post Office (historical) | Brooklyn Post Office (historical) | Cuyahoga | 761 | Cleveland South |
| Brooklyn Village Post Office (historical) | Brooklyn Village Post Office (historical) | Cuyahoga | Unknown | |
| Burnetts Corners Post Office (historical) | Burnetts Corners Post Office (historical) | Cuyahoga | Unknown | |
| Chaffee Post Office (historical) | Chaffee Post Office (historical) | Cuyahoga | Unknown | |
| Claribel Post Office (historical) | Claribel Post Office (historical) | Cuyahoga | Unknown | |
| Clifton Park Post Office (historical) | Clifton Park Post Office (historical) | Cuyahoga | 656 | Lakewood |
| Columbia Post Office (historical) | Columbia Post Office (historical) | Cuyahoga | Unknown | |
| Doans Corners Post Office (historical) | Doans Corners Post Office (historical) | Cuyahoga | 679 | East Cleveland |
| Westlake Post Office (historical) | Westlake Post Office (historical) | Cuyahoga | 705 | North Olmsted |
| Fairmount Post Office (historical) | Fairmount Post Office (historical) | Cuyahoga | 850 | East Cleveland |
| Gavers Post Office (historical) | Gavers Post Office (historical) | Columbiana | 1014 | Gavers |
| Glasgow Post Office (historical) | Glasgow Post Office (historical) | Columbiana | 1253 | West Point |
| Greenhill Post Office (historical) | Greenhill Post Office (historical) | Columbiana | Unknown | |
| Whetstone Post Office (historical) | Whetstone Post Office (historical) | Crawford | Unknown | |
| Chili Post Office (historical) | Chili Post Office (historical) | Coshocton | 810 | Coshocton |
| Evansburg Post Office (historical) | Evansburg Post Office (historical) | Coshocton | Unknown | |
| Helmick Post Office (historical) | Helmick Post Office (historical) | Coshocton | 794 | Killbuck |
| Holly Post Office (historical) | Holly Post Office (historical) | Coshocton | Unknown | |
| Isleta Post Office (historical) | Isleta Post Office (historical) | Coshocton | 797 | Fresno |
| Layland Post Office (historical) | Layland Post Office (historical) | Coshocton | 797 | Killbuck |
| Linton Mills Post Office (historical) | Linton Mills Post Office (historical) | Coshocton | 755 | Plainfield |
| Metham Post Office (historical) | Metham Post Office (historical) | Coshocton | 791 | Randle |
| Mill Creek Post Office (historical) | Mill Creek Post Office (historical) | Coshocton | Unknown | |
| Mohawk Village Post Office (historical) | Mohawk Village Post Office (historical) | Coshocton | 1001 | Warsaw |
| Mound Post Office (historical) | Mound Post Office (historical) | Coshocton | Unknown | |
| Munnsville Post Office (historical) | Munnsville Post Office (historical) | Coshocton | 1040 | Coshocton |
| Nellie Post Office (historical) | Nellie Post Office (historical) | Coshocton | 817 | Warsaw |
| New Bedford Post Office (historical) | New Bedford Post Office (historical) | Coshocton | 1148 | New Bedford |
| New Guilford Post Office (historical) | New Guilford Post Office (historical) | Coshocton | 1152 | Walhonding |
| New Moscow Post Office (historical) | New Moscow Post Office (historical) | Coshocton | 804 | Conesville |
| New Princeton Post Office (historical) | New Princeton Post Office (historical) | Coshocton | 886 | Spring Mountain |
| Oliopolis Post Office (historical) | Oliopolis Post Office (historical) | Coshocton | Unknown | |
| Pearl Post Office (historical) | Pearl Post Office (historical) | Coshocton | 896 | Fresno |
| Spring Mountain Post Office (historical) | Spring Mountain Post Office (historical) | Coshocton | 1220 | Spring Mountain |
| Shannon Post Office (historical) | Shannon Post Office (historical) | Coshocton | Unknown | |
| Simmons Mill Post Office (historical) | Simmons Mill Post Office (historical) | Coshocton | Unknown | |
| Tiverton Post Office (historical) | Tiverton Post Office (historical) | Coshocton | Unknown | |
| Tiverton Post Office (historical) | Tiverton Post Office (historical) | Coshocton | 1227 | Brinkhaven |
| Tunnel Hill Post Office (historical) | Tunnel Hill Post Office (historical) | Coshocton | 827 | Warsaw |
| Tyrone Post Office (historical) | Tyrone Post Office (historical) | Coshocton | 1096 | Randle |
| Wakatomika Post Office (historical) | Wakatomika Post Office (historical) | Coshocton | 761 | Trinway |
| West Bedford Post Office (historical) | West Bedford Post Office (historical) | Coshocton | 1083 | Warsaw |
| West Carlisle Post Office (historical) | West Carlisle Post Office (historical) | Coshocton | 1050 | Trinway |
| Willowbrook Post Office (historical) | Willowbrook Post Office (historical) | Coshocton | 846 | Conesville |
| Will's Creek Post Office (historical) | Will's Creek Post Office (historical) | Coshocton | 778 | Wills Creek |
| Wintergreen Post Office (historical) | Wintergreen Post Office (historical) | Coshocton | Unknown | |
| Clark Post Office | Clark Post Office | Coshocton | 827 | Killbuck |
| Cooperdale Post Office (historical) | Cooperdale Post Office (historical) | Coshocton | 774 | Trinway |
| New Castle Post Office (historical) | New Castle Post Office (historical) | Coshocton | Unknown | |
| Bayard Post Office (historical) | Bayard Post Office (historical) | Columbiana | 1102 | Homeworth |
| Bellefonte Post Office (historical) | Bellefonte Post Office (historical) | Columbiana | Unknown | |
| Boyds Post Office (historical) | Boyds Post Office (historical) | Columbiana | Unknown | |
| Bucks Post Office (historical) | Bucks Post Office (historical) | Columbiana | Unknown | |
| Butler Post Office (historical) | Butler Post Office (historical) | Columbiana | Unknown | |
| Calcutta Post Office (historical) | Calcutta Post Office (historical) | Columbiana | 1112 | East Liverpool North |
| Campus Post Office (historical) | Campus Post Office (historical) | Columbiana | 971 | West Point |
| Cannons Mill Post Office (historical) | Cannons Mill Post Office (historical) | Columbiana | 935 | East Liverpool North |
| Clarkes Farm Post Office (historical) | Clarkes Farm Post Office (historical) | Columbiana | Unknown | |
| Clarkson Post Office (historical) | Clarkson Post Office (historical) | Columbiana | 1191 | East Liverpool North |
| Colman Post Office (historical) | Colman Post Office (historical) | Columbiana | 1066 | Lisbon |
| Dungannon Post Office (historical) | Dungannon Post Office (historical) | Columbiana | 1122 | Kensington |
| East Carmel Post Office (historical) | East Carmel Post Office (historical) | Columbiana | 1227 | East Palestine |
| East Fairfield Post Office (historical) | East Fairfield Post Office (historical) | Columbiana | 1230 | Elkton |
| Fawcettstown Post Office (historical) | Fawcettstown Post Office (historical) | Columbiana | Unknown | |
| Franklin Square Post Office (historical) | Franklin Square Post Office (historical) | Columbiana | 1063 | Lisbon |
| Homeworth Post Office | Homeworth Post Office | Columbiana | 1132 | Homeworth |
| Kensington Post Office | Kensington Post Office | Columbiana | 1135 | Kensington |
| Leetonia Post Office | Leetonia Post Office | Columbiana | 1017 | Salem |
| Negley Post Office | Negley Post Office | Columbiana | 856 | East Palestine |
| New Waterford Post Office | New Waterford Post Office | Columbiana | 1050 | East Palestine |
| North Georgetown Post Office | North Georgetown Post Office | Columbiana | 1138 | Hanoverton |
| Salineville Post Office | Salineville Post Office | Columbiana | 899 | Salineville |
| Summitville Post Office | Summitville Post Office | Columbiana | 1106 | Kensington |
| Washington Post Office | Washington Post Office | Columbiana | 1053 | Salem |
| West Point Post Office | West Point Post Office | Columbiana | 932 | West Point |
| Winona Post Office | Winona Post Office | Columbiana | 1188 | Hanoverton |
| Bakersville Post Office | Bakersville Post Office | Coshocton | 840 | Fresno |
| Conesville Post Office | Conesville Post Office | Coshocton | 745 | Conesville |
| Keene Post Office | Keene Post Office | Coshocton | 1027 | Coshocton |
| Bacon Post Office (historical) | Bacon Post Office (historical) | Coshocton | 817 | Wills Creek |
| Bluff Post Office (historical) | Bluff Post Office (historical) | Coshocton | 820 | Warsaw |
| Bowman Post Office (historical) | Bowman Post Office (historical) | Coshocton | Unknown | |
| Roscoe Post Office (historical) | Roscoe Post Office (historical) | Coshocton | 886 | Randle |
| Canal Lewisville Post Office (historical) | Canal Lewisville Post Office (historical) | Coshocton | 768 | Coshocton |
| Grissells Post Office (historical) | Grissells Post Office (historical) | Columbiana | Unknown | |
| Hastingsville Post Office (historical) | Hastingsville Post Office (historical) | Columbiana | Unknown | |
| Ingraham Post Office (historical) | Ingraham Post Office (historical) | Columbiana | Unknown | |
| Inverness Post Office (historical) | Inverness Post Office (historical) | Columbiana | Unknown | |
| Klondyke Post Office (historical) | Klondyke Post Office (historical) | Columbiana | Unknown | |
| Lee City Post Office (historical) | Lee City Post Office (historical) | Columbiana | Unknown | |
| Licola Post Office (historical) | Licola Post Office (historical) | Columbiana | Unknown | |
| Little Beaver Bridge Post Office (historical) | Little Beaver Bridge Post Office (historical) | Columbiana | Unknown | |
| Lucerne Post Office (historical) | Lucerne Post Office (historical) | Columbiana | Unknown | |
| McKaigs Mills Post Office (historical) | McKaigs Mills Post Office (historical) | Columbiana | Unknown | |
| Millport Post Office (historical) | Millport Post Office (historical) | Columbiana | 1073 | Kensington |
| Millrock Post Office (historical) | Millrock Post Office (historical) | Columbiana | 915 | East Palestine |
| Mosk Post Office (historical) | Mosk Post Office (historical) | Columbiana | Unknown | |
| Nebraska Post Office (historical) | Nebraska Post Office (historical) | Columbiana | Unknown | |
| New Alexander Post Office (historical) | New Alexander Post Office (historical) | Columbiana | Unknown | |
| New Chambersburg Post Office (historical) | New Chambersburg Post Office (historical) | Columbiana | Unknown | |
| Newgarden Post Office (historical) | Newgarden Post Office (historical) | Columbiana | 1289 | Hanoverton |
| New Salisbury Post Office (historical) | New Salisbury Post Office (historical) | Columbiana | 761 | Wellsville |
| Noble Post Office (historical) | Noble Post Office (historical) | Cuyahoga | 640 | East Cleveland |
| Olmsted Post Office (historical) | Olmsted Post Office (historical) | Cuyahoga | 764 | North Olmsted |
| North Randall Post Office (historical) | North Randall Post Office (historical) | Cuyahoga | 1043 | Shaker Heights |
| Rockport Post Office (historical) | Rockport Post Office (historical) | Cuyahoga | 728 | Lakewood |
| Rocky River Post Office (historical) | Rocky River Post Office (historical) | Cuyahoga | 692 | Lakewood |
| Solon Post Office (historical) | Solon Post Office (historical) | Cuyahoga | 1043 | Chagrin Falls |
| Sorrento Post Office (historical) | Sorrento Post Office (historical) | Cuyahoga | 925 | Shaker Heights |
| South Euclid Post Office (historical) | South Euclid Post Office (historical) | Cuyahoga | 951 | East Cleveland |
| South Park Post Office (historical) | South Park Post Office (historical) | Cuyahoga | 614 | Northfield |
| Windemere Post Office (historical) | Windemere Post Office (historical) | Cuyahoga | Unknown | |
| Vigil Post Office (historical) | Vigil Post Office (historical) | Cuyahoga | Unknown | |
| Warrensville Post Office (historical) | Warrensville Post Office (historical) | Cuyahoga | 1083 | Shaker Heights |
| West Cleveland Post Office (historical) | West Cleveland Post Office (historical) | Cuyahoga | Unknown | |
| West Dover Post Office (historical) | West Dover Post Office (historical) | Cuyahoga | 627 | North Olmsted |
| West Park Post Office (historical) | West Park Post Office (historical) | Cuyahoga | 761 | Lakewood |
| Westview Post Office (historical) | Westview Post Office (historical) | Cuyahoga | 778 | West View |
| Willow Post Office (historical) | Willow Post Office (historical) | Cuyahoga | 623 | Cleveland South |
| Wilson Mills Post Office (historical) | Wilson Mills Post Office (historical) | Cuyahoga | Unknown | |
| Gates Mills Post Office | Gates Mills Post Office | Cuyahoga | 709 | Mayfield Heights |
| East End Post Office (historical) | East End Post Office (historical) | Cuyahoga | Unknown | |
| Euclid Post Office (historical) | Euclid Post Office (historical) | Cuyahoga | 620 | East Cleveland |
| Olmsted Falls Post Office | Olmsted Falls Post Office | Cuyahoga | Unknown | |
| East Cleveland Post Office (historical) | East Cleveland Post Office (historical) | Cuyahoga | Unknown | |
| East Cleveland Post Office (historical) | East Cleveland Post Office (historical) | Cuyahoga | Unknown | |
| Orange Post Office (historical) | Orange Post Office (historical) | Cuyahoga | 1158 | Chagrin Falls |
| Pardee Post Office (historical) | Pardee Post Office (historical) | Cuyahoga | Unknown | |
| Parma Post Office (historical) | Parma Post Office (historical) | Cuyahoga | 866 | Cleveland South |
| Glenville Post Office (historical) | Glenville Post Office (historical) | Cuyahoga | 623 | East Cleveland |
| Glenwillow Post Office (historical) | Glenwillow Post Office (historical) | Cuyahoga | 938 | Twinsburg |
| Goldwood Post Office (historical) | Goldwood Post Office (historical) | Cuyahoga | Unknown | |
| Gresham Post Office (historical) | Gresham Post Office (historical) | Cuyahoga | 755 | Lakewood |
| Miles Post Office (historical) | Miles Post Office (historical) | Cuyahoga | 869 | Shaker Heights |
| Independence Post Office (historical) | Independence Post Office (historical) | Cuyahoga | 863 | Broadview Heights |
| Ansonia Post Office | Ansonia Post Office | Darke | 1001 | Ansonia |
| Arcanum Post Office | Arcanum Post Office | Darke | 1047 | Arcanum |
| Castine Post Office | Castine Post Office | Darke | 1076 | Arcanum |
| Palestine Post Office | Palestine Post Office | Darke | 1102 | Greenville West |
| Versailles Post Office | Versailles Post Office | Darke | 984 | Versailles |
| Gettysburg Post Office | Gettysburg Post Office | Darke | 991 | Gettysburg |
| Gordon Post Office | Gordon Post Office | Darke | 1047 | Arcanum |
| Hollansburg Post Office | Hollansburg Post Office | Darke | 1161 | Whitewater |
| New Madison Post Office | New Madison Post Office | Darke | 1112 | New Madison |
| New Weston Post Office | New Weston Post Office | Darke | 1007 | Rossburg |
| North Star Post Office | North Star Post Office | Darke | 1001 | North Star |
| Osgood Post Office | Osgood Post Office | Darke | 958 | Osgood |
| Pitsburg Post Office | Pitsburg Post Office | Darke | 1024 | Laura |
| Rossburg Post Office | Rossburg Post Office | Darke | 1030 | Rossburg |
| Jaite Post Office (historical) | Jaite Post Office (historical) | Cuyahoga | 643 | Northfield |
| Kamms Post Office (historical) | Kamms Post Office (historical) | Cuyahoga | Unknown | |
| Lake View Post Office (historical) | Lake View Post Office (historical) | Cuyahoga | Unknown | |
| Lelands Corners Post Office (historical) | Lelands Corners Post Office (historical) | Cuyahoga | Unknown | |
| North Linndale Post Office (historical) | North Linndale Post Office (historical) | Cuyahoga | 761 | Lakewood |
| Lyndhurst Post Office (historical) | Lyndhurst Post Office (historical) | Cuyahoga | 1037 | Mayfield Heights |
| Mapes Corners Post Office (historical) | Mapes Corners Post Office (historical) | Cuyahoga | Unknown | |
| Mayfield Post Office (historical) | Mayfield Post Office (historical) | Cuyahoga | 928 | Mayfield Heights |
| McKinley Post Office (historical) | McKinley Post Office (historical) | Cuyahoga | 781 | Lakewood |
| Middleburgh Post Office (historical) | Middleburgh Post Office (historical) | Cuyahoga | Unknown | |
| Newburgh Post Office (historical) | Newburgh Post Office (historical) | Cuyahoga | Unknown | |
| Abbottsville Post Office (historical) | Abbottsville Post Office (historical) | Darke | 1063 | Greenville East |
| Baker Mills Post Office (historical) | Baker Mills Post Office (historical) | Darke | 1073 | Greenville West |
| Beamsville Post Office (historical) | Beamsville Post Office (historical) | Darke | 1004 | Dawn |
| Beech Grove Post Office (historical) | Beech Grove Post Office (historical) | Darke | 1093 | Arcanum |
| Brock Post Office (historical) | Brock Post Office (historical) | Darke | 1043 | North Star |
| Bruss Post Office (historical) | Bruss Post Office (historical) | Darke | Unknown | |
| Carter Post Office (historical) | Carter Post Office (historical) | Darke | Unknown | |
| Chenoweths Post Office (historical) | Chenoweths Post Office (historical) | Darke | Unknown | |
| Wiley Post Office (historical) | Wiley Post Office (historical) | Darke | 1093 | Whitewater |
| Cosmos Post Office (historical) | Cosmos Post Office (historical) | Darke | 1030 | Cosmos |
| Dapple Post Office (historical) | Dapple Post Office (historical) | Darke | Unknown | |
| Darke Post Office (historical) | Darke Post Office (historical) | Darke | Unknown | |
| Delvin Post Office (historical) | Delvin Post Office (historical) | Darke | 988 | North Star |
| Dawn Post Office (historical) | Dawn Post Office (historical) | Darke | 1014 | Dawn |
| Delisle Post Office (historical) | Delisle Post Office (historical) | Darke | 1050 | Greenville East |
| Elroy Post Office (historical) | Elroy Post Office (historical) | Darke | 1033 | Ansonia |
| Weavers Station Post Office (historical) | Weavers Station Post Office (historical) | Darke | 1056 | Greenville West |
| Fort Jefferson Post Office (historical) | Fort Jefferson Post Office (historical) | Darke | 1079 | Greenville West |
| Glenkarn Post Office (historical) | Glenkarn Post Office (historical) | Darke | 1155 | Spartanburg |
| Greenwood Post Office (historical) | Greenwood Post Office (historical) | Darke | Unknown | |
| Hetslerville Post Office (historical) | Hetslerville Post Office (historical) | Darke | 1047 | Ansonia |
| Mosspoint Post Office (historical) | Mosspoint Post Office (historical) | Cuyahoga | Unknown | |
| Spear's Mills Post Office (historical) | Spear's Mills Post Office (historical) | Columbiana | Unknown | |
| Hillgrove Post Office (historical) | Hillgrove Post Office (historical) | Darke | 1073 | Union City |
| Horatio Post Office (historical) | Horatio Post Office (historical) | Darke | 1007 | Dawn |
| Ithaca Post Office (historical) | Ithaca Post Office (historical) | Darke | 1030 | Arcanum |
| Landis Post Office (historical) | Landis Post Office (historical) | Darke | 1024 | Greenville East |
| Long Post Office (historical) | Long Post Office (historical) | Darke | 1171 | Spartanburg |
| Lightsville Post Office (historical) | Lightsville Post Office (historical) | Darke | 1040 | Rossburg |
| Matchett Post Office (historical) | Matchett Post Office (historical) | Darke | Unknown | |
| Monroe Crossing Post Office (historical) | Monroe Crossing Post Office (historical) | Darke | Unknown | |
| Mount Heron Post Office (historical) | Mount Heron Post Office (historical) | Darke | 1053 | Ansonia |
| New Harrison Post Office (historical) | New Harrison Post Office (historical) | Darke | 1017 | Greenville East |
| Noggle Post Office (historical) | Noggle Post Office (historical) | Darke | Unknown | |
| Painter Creek Post Office (historical) | Painter Creek Post Office (historical) | Darke | 1017 | Gettysburg |
| Pikeville Post Office (historical) | Pikeville Post Office (historical) | Darke | 1020 | Dawn |
| Pittsburgh Post Office (historical) | Pittsburgh Post Office (historical) | Darke | Unknown | |
| Poplar Ridge Post Office (historical) | Poplar Ridge Post Office (historical) | Darke | 1027 | Greenville East |
| Red River Post Office (historical) | Red River Post Office (historical) | Darke | 991 | Gettysburg |
| Rosehill Post Office (historical) | Rosehill Post Office (historical) | Darke | 1070 | Rossburg |
| Rossville Post Office (historical) | Rossville Post Office (historical) | Darke | Unknown | |
| Rest Post Office (historical) | Rest Post Office (historical) | Darke | Unknown | |
| Sampson Post Office (historical) | Sampson Post Office (historical) | Darke | 1070 | Greenville East |
| Savona Post Office (historical) | Savona Post Office (historical) | Darke | 1093 | New Madison |
| Seven Mile Prairie Post Office (historical) | Seven Mile Prairie Post Office (historical) | Darke | Unknown | |
| Sharpeye Post Office (historical) | Sharpeye Post Office (historical) | Darke | 1083 | Greenville West |
| Stelvideo Post Office (historical) | Stelvideo Post Office (historical) | Darke | 1017 | Dawn |
| Tampico Post Office (historical) | Tampico Post Office (historical) | Darke | 1161 | Spartanburg |
| Vine Post Office (historical) | Vine Post Office (historical) | Darke | Unknown | |
| Webster Post Office (historical) | Webster Post Office (historical) | Darke | 978 | Versailles |
| West Nashville Post Office (historical) | West Nashville Post Office (historical) | Darke | Unknown | |
| Willowdell Post Office (historical) | Willowdell Post Office (historical) | Darke | 994 | Osgood |
| Woodington Park Post Office (historical) | Woodington Park Post Office (historical) | Darke | 1030 | Ansonia |
| Woodland Post Office (historical) | Woodland Post Office (historical) | Darke | Unknown | |
| Yankeetown Post Office (historical) | Yankeetown Post Office (historical) | Darke | 1175 | New Madison |
| Yorkshire Post Office (historical) | Yorkshire Post Office (historical) | Darke | 981 | Osgood |
| Adams Ridge Post Office (historical) | Adams Ridge Post Office (historical) | Defiance | 732 | Ridgeville Corners |
| Arrowsmiths Post Office (historical) | Arrowsmiths Post Office (historical) | Defiance | Unknown | |
| Ashwood Post Office (historical) | Ashwood Post Office (historical) | Defiance | 712 | Defiance West |
| Evansport Post Office | Evansport Post Office | Defiance | 692 | Evansport |
| Farmer Post Office | Farmer Post Office | Defiance | 748 | Edgerton |
| Hicksville Post Office | Hicksville Post Office | Defiance | 764 | Hicksville |
| Jewell Post Office | Jewell Post Office | Defiance | 722 | Defiance East |
| Mark Center Post Office | Mark Center Post Office | Defiance | 718 | Mark Center |
| Ney Post Office | Ney Post Office | Defiance | 712 | Bryan |
| Sherwood Post Office | Sherwood Post Office | Defiance | 709 | Sherwood |
| Wilseyville Post Office (historical) | Wilseyville Post Office (historical) | Defiance | 758 | Mark Center |
| Ayersville Post Office (historical) | Ayersville Post Office (historical) | Defiance | 732 | Ayersville |
| Brunersburg Post Office (historical) | Brunersburg Post Office (historical) | Defiance | 689 | Defiance West |
| Cicero Post Office (historical) | Cicero Post Office (historical) | Defiance | 784 | Mark Center |
| Cup Post Office (historical) | Cup Post Office (historical) | Defiance | Unknown | |
| The Bend Post Office (historical) | The Bend Post Office (historical) | Defiance | 699 | Sherwood |
| Domerville Post Office (historical) | Domerville Post Office (historical) | Defiance | 732 | Ridgeville Corners |
| Foss Post Office (historical) | Foss Post Office (historical) | Defiance | Unknown | |
| Glenburg Post Office (historical) | Glenburg Post Office (historical) | Defiance | 709 | Evansport |
| Jero Post Office (historical) | Jero Post Office (historical) | Defiance | Unknown | |
| Mark Post Office (historical) | Mark Post Office (historical) | Defiance | Unknown | |
| McCauleys Post Office (historical) | McCauleys Post Office (historical) | Defiance | Unknown | |
| Milldale Post Office (historical) | Milldale Post Office (historical) | Defiance | Unknown | |
| Milo Post Office (historical) | Milo Post Office (historical) | Defiance | Unknown | |
| Moats Post Office (historical) | Moats Post Office (historical) | Defiance | 709 | Sherwood |
| Nebo Post Office (historical) | Nebo Post Office (historical) | Defiance | Unknown | |
| Snookville Post Office (historical) | Snookville Post Office (historical) | Defiance | Unknown | |
| Westburgh Post Office (historical) | Westburgh Post Office (historical) | Defiance | Unknown | |
| White City Post Office (historical) | White City Post Office (historical) | Defiance | Unknown | |
| Orchard Post Office (historical) | Orchard Post Office (historical) | Clark | Unknown | |
| Oxtoby Post Office (historical) | Oxtoby Post Office (historical) | Clark | 1109 | New Moorefield |
| Pitchin Post Office (historical) | Pitchin Post Office (historical) | Clark | 1086 | Clifton |
| Plattsburg Post Office (historical) | Plattsburg Post Office (historical) | Clark | 1155 | South Vienna |
| Prairie Fountain Post Office (historical) | Prairie Fountain Post Office (historical) | Clark | Unknown | |
| Africa Post Office (historical) | Africa Post Office (historical) | Delaware | 863 | Galena |
| Alum Creek Post Office (historical) | Alum Creek Post Office (historical) | Delaware | 945 | Kilbourne |
| Bellpoint Post Office (historical) | Bellpoint Post Office (historical) | Delaware | 866 | Shawnee Hills |
| Berkshire Post Office (historical) | Berkshire Post Office (historical) | Delaware | 951 | Kilbourne |
| Buell's Post Office (historical) | Buell's Post Office (historical) | Delaware | Unknown | |
| Carpenter's Mills Post Office (historical) | Carpenter's Mills Post Office (historical) | Delaware | Unknown | |
| Centre Post Office (historical) | Centre Post Office (historical) | Delaware | Unknown | |
| Center Village Post Office (historical) | Center Village Post Office (historical) | Delaware | 1070 | Sunbury |
| Coles Mills Post Office (historical) | Coles Mills Post Office (historical) | Delaware | Unknown | |
| Condit Post Office (historical) | Condit Post Office (historical) | Delaware | 1086 | Olive Green |
| Constantia Post Office (historical) | Constantia Post Office (historical) | Delaware | Unknown | |
| Crawfords Mills Post Office (historical) | Crawfords Mills Post Office (historical) | Delaware | Unknown | |
| Culver Creek Post Office (historical) | Culver Creek Post Office (historical) | Delaware | Unknown | |
| East Orange Post Office (historical) | East Orange Post Office (historical) | Delaware | Unknown | |
| Genoa Post Office (historical) | Genoa Post Office (historical) | Delaware | Unknown | |
| Genoa Cross Roads Post Office (historical) | Genoa Cross Roads Post Office (historical) | Delaware | Unknown | |
| Rathbone Post Office (historical) | Rathbone Post Office (historical) | Delaware | 909 | Shawnee Hills |
| Goodingdale Post Office (historical) | Goodingdale Post Office (historical) | Delaware | Unknown | |
| Gregory Post Office (historical) | Gregory Post Office (historical) | Delaware | 955 | Powell |
| Harlem Post Office (historical) | Harlem Post Office (historical) | Delaware | 991 | Sunbury |
| White Sulphur Post Office (historical) | White Sulphur Post Office (historical) | Delaware | 892 | Ostrander |
| Hyattville Post Office (historical) | Hyattville Post Office (historical) | Delaware | Unknown | |
| Kingston Center Post Office (historical) | Kingston Center Post Office (historical) | Delaware | 991 | Kilbourne |
| Leonardsburg Post Office (historical) | Leonardsburg Post Office (historical) | Delaware | 984 | Kilbourne |
| Ashley Post Office | Ashley Post Office | Delaware | 981 | Ashley |
| Galena Post Office | Galena Post Office | Delaware | 922 | Galena |
| Kilbourne Post Office | Kilbourne Post Office | Delaware | 919 | Kilbourne |
| Lewis Center Post Office | Lewis Center Post Office | Delaware | 942 | Powell |
| Ostrander Post Office | Ostrander Post Office | Delaware | 925 | Ostrander |
| Powell Post Office | Powell Post Office | Delaware | 909 | Powell |
| Radnor Post Office | Radnor Post Office | Delaware | 928 | Prospect |
| Shawnee Hills Post Office | Shawnee Hills Post Office | Delaware | 896 | Shawnee Hills |
| Sunbury Post Office | Sunbury Post Office | Delaware | 968 | Sunbury |
| Scioto Bridge Post Office (historical) | Scioto Bridge Post Office (historical) | Delaware | Unknown | |
| Lybrand Post Office (historical) | Lybrand Post Office (historical) | Delaware | 938 | Ostrander |
| Maxtown Post Office (historical) | Maxtown Post Office (historical) | Delaware | Unknown | |
| Maxwell Post Office (historical) | Maxwell Post Office (historical) | Delaware | Unknown | |
| Norton Post Office (historical) | Norton Post Office (historical) | Delaware | 925 | Prospect |
| Porter Post Office (historical) | Porter Post Office (historical) | Delaware | Unknown | |
| Orange Station Post Office (historical) | Orange Station Post Office (historical) | Delaware | Unknown | |
| Patterson Post Office (historical) | Patterson Post Office (historical) | Delaware | Unknown | |
| Peerless Post Office (historical) | Peerless Post Office (historical) | Delaware | 1181 | Olive Green |
| Pickerell Post Office (historical) | Pickerell Post Office (historical) | Delaware | Unknown | |
| Ralph Post Office (historical) | Ralph Post Office (historical) | Delaware | 1106 | Sunbury |
| Stratford Post Office (historical) | Stratford Post Office (historical) | Delaware | 840 | Delaware |
| West Berlin Post Office (historical) | West Berlin Post Office (historical) | Delaware | 951 | Delaware |
| Vanns Valley Post Office (historical) | Vanns Valley Post Office (historical) | Delaware | 1047 | Sunbury |
| Troyton Post Office (historical) | Troyton Post Office (historical) | Delaware | 965 | Waldo |
| Unison Post Office (historical) | Unison Post Office (historical) | Delaware | Unknown | |
| Warrensburg Post Office (historical) | Warrensburg Post Office (historical) | Delaware | 879 | Ostrander |
| Williamsville Post Office (historical) | Williamsville Post Office (historical) | Delaware | Unknown | |
| Ashmont Post Office (historical) | Ashmont Post Office (historical) | Erie | 614 | Vermilion West |
| Avery Post Office (historical) | Avery Post Office (historical) | Erie | 633 | Milan |
| Axtel Post Office (historical) | Axtel Post Office (historical) | Erie | 771 | Kipton |
| Baybridge Post Office (historical) | Baybridge Post Office (historical) | Erie | Unknown | |
| Bay View Post Office (historical) | Bay View Post Office (historical) | Erie | 577 | Castalia |
| Berlinville Post Office (historical) | Berlinville Post Office (historical) | Erie | 774 | Milan |
| Beulah Beach Post Office (historical) | Beulah Beach Post Office (historical) | Erie | 600 | Vermilion West |
| Bloomingville Post Office (historical) | Bloomingville Post Office (historical) | Erie | 686 | Kimball |
| Bogart Post Office (historical) | Bogart Post Office (historical) | Erie | 617 | Sandusky |
| Berlin Heights Post Office | Berlin Heights Post Office | Erie | 778 | Berlin Heights |
| Birmingham Post Office | Birmingham Post Office | Erie | 784 | Kipton |
| Castalia Post Office | Castalia Post Office | Erie | 636 | Castalia |
| Milan Post Office | Milan Post Office | Erie | 663 | Milan |
| Shinrock Post Office | Shinrock Post Office | Erie | 623 | Milan |
| New Moorefield Post Office (historical) | New Moorefield Post Office (historical) | Clark | 1047 | New Moorefield |
| Macbride Post Office (historical) | Macbride Post Office (historical) | Delaware | Unknown | |
| Carroll Post Office | Carroll Post Office | Fairfield | 830 | Carroll |
| Amanda Post Office | Amanda Post Office | Fairfield | 928 | Amanda |
| Baltimore Post Office | Baltimore Post Office | Fairfield | 866 | Baltimore |
| Bremen Post Office | Bremen Post Office | Fairfield | 797 | Bremen |
| Hide-A-Way Hills Post Office | Hide-A-Way Hills Post Office | Fairfield | Unknown | |
| Lithopolis Post Office | Lithopolis Post Office | Fairfield | 938 | Canal Winchester |
| Millersport Post Office | Millersport Post Office | Fairfield | 902 | Millersport |
| Pickerington Post Office | Pickerington Post Office | Fairfield | 840 | Reynoldsburg |
| Pleasantville Post Office | Pleasantville Post Office | Fairfield | 915 | Baltimore |
| Rushville Post Office | Rushville Post Office | Fairfield | 915 | Baltimore |
| Stoutsville Post Office | Stoutsville Post Office | Fairfield | 961 | Stoutsville |
| Sugar Grove Post Office | Sugar Grove Post Office | Fairfield | 778 | Lancaster |
| Thurston Post Office | Thurston Post Office | Fairfield | 886 | Baltimore |
| West Rushville Post Office | West Rushville Post Office | Fairfield | 1020 | Rushville |
| Delmont Post Office (historical) | Delmont Post Office (historical) | Fairfield | 1030 | Amanda |
| Drinkle Post Office (historical) | Drinkle Post Office (historical) | Fairfield | 784 | Rockbridge |
| Dumontville Post Office (historical) | Dumontville Post Office (historical) | Fairfield | 994 | Baltimore |
| Clearport Post Office (historical) | Clearport Post Office (historical) | Fairfield | 866 | Clearport |
| Colfax Post Office (historical) | Colfax Post Office (historical) | Fairfield | 1001 | Lancaster |
| Green Castle Post Office (historical) | Green Castle Post Office (historical) | Fairfield | 1043 | Canal Winchester |
| Basil Post Office (historical) | Basil Post Office (historical) | Fairfield | Unknown | |
| Cedarhill Post Office (historical) | Cedarhill Post Office (historical) | Fairfield | 883 | East Ringgold |
| Clearcreek Post Office (historical) | Clearcreek Post Office (historical) | Fairfield | Unknown | |
| Flagdale Post Office (historical) | Flagdale Post Office (historical) | Fairfield | Unknown | |
| Hamburg Post Office (historical) | Hamburg Post Office (historical) | Fairfield | 1037 | Amanda |
| Hooker Post Office (historical) | Hooker Post Office (historical) | Fairfield | 843 | Amanda |
| Lockville Post Office (historical) | Lockville Post Office (historical) | Fairfield | 810 | Carroll |
| Marcy Post Office (historical) | Marcy Post Office (historical) | Fairfield | 945 | Canal Winchester |
| Monticello Post Office (historical) | Monticello Post Office (historical) | Fairfield | 945 | Millersport |
| New Salem Post Office (historical) | New Salem Post Office (historical) | Fairfield | 1027 | Rushville |
| North Berne Post Office (historical) | North Berne Post Office (historical) | Fairfield | 827 | Bremen |
| Oakthorpe Post Office (historical) | Oakthorpe Post Office (historical) | Fairfield | 906 | Rushville |
| Revenge Post Office (historical) | Revenge Post Office (historical) | Fairfield | 820 | Clearport |
| Royalton Post Office (historical) | Royalton Post Office (historical) | Fairfield | 1010 | East Ringgold |
| Rudden Post Office (historical) | Rudden Post Office (historical) | Fairfield | Unknown | |
| Slough Post Office (historical) | Slough Post Office (historical) | Fairfield | 991 | Canal Winchester |
| Strasburg Post Office (historical) | Strasburg Post Office (historical) | Fairfield | Unknown | |
| Walnut Post Office (historical) | Walnut Post Office (historical) | Fairfield | Unknown | |
| Yelrah Post Office (historical) | Yelrah Post Office (historical) | Fairfield | Unknown | |
| Bloomingburg Post Office | Bloomingburg Post Office | Fayette | 994 | Washington Court House |
| Ceylon Post Office (historical) | Ceylon Post Office (historical) | Erie | 610 | Berlin Heights |
| Prout Post Office (historical) | Prout Post Office (historical) | Erie | 702 | Kimball |
| Cookes Post Office (historical) | Cookes Post Office (historical) | Erie | Unknown | |
| Florence Post Office (historical) | Florence Post Office (historical) | Erie | 820 | Berlin Heights |
| Furnace Post Office (historical) | Furnace Post Office (historical) | Erie | Unknown | |
| Groton Post Office (historical) | Groton Post Office (historical) | Erie | Unknown | |
| Jay Post Office (historical) | Jay Post Office (historical) | Erie | Unknown | |
| Kimball Post Office (historical) | Kimball Post Office (historical) | Erie | 709 | Kimball |
| Ogontz Post Office (historical) | Ogontz Post Office (historical) | Erie | 768 | Berlin Heights |
| Parkerton Post Office (historical) | Parkerton Post Office (historical) | Erie | 715 | Bellevue |
| Perkins Post Office (historical) | Perkins Post Office (historical) | Erie | Unknown | |
| Prairieville Post Office (historical) | Prairieville Post Office (historical) | Erie | Unknown | |
| Sandhill Post Office (historical) | Sandhill Post Office (historical) | Erie | 712 | Bellevue |
| State Soldiers Home Post Office (historical) | State Soldiers Home Post Office (historical) | Erie | Unknown | |
| Venice Post Office (historical) | Venice Post Office (historical) | Erie | 581 | Castalia |
| Weyers Post Office (historical) | Weyers Post Office (historical) | Erie | 673 | Bellevue |
| Wilmer Post Office (historical) | Wilmer Post Office (historical) | Erie | 623 | Sandusky |
| Blowville Post Office (historical) | Blowville Post Office (historical) | Clermont | 886 | Williamsburg |
| Boat Run Post Office (historical) | Boat Run Post Office (historical) | Clermont | Unknown | |
| May Post Office (historical) | May Post Office (historical) | Clermont | 856 | Batavia |
| Cedron Post Office (historical) | Cedron Post Office (historical) | Clermont | 535 | Felicity |
| Laurel Post Office (historical) | Laurel Post Office (historical) | Clermont | 883 | Laurel |
| Clermontville Post Office (historical) | Clermontville Post Office (historical) | Clermont | 495 | New Richmond |
| Craver Post Office (historical) | Craver Post Office (historical) | Clermont | 597 | Goshen |
| Elenor Post Office (historical) | Elenor Post Office (historical) | Clermont | 883 | Goshen |
| Allen Post Office (historical) | Allen Post Office (historical) | Fayette | Unknown | |
| Bookwalter Post Office (historical) | Bookwalter Post Office (historical) | Fayette | 1056 | Jeffersonville |
| Convenience Post Office (historical) | Convenience Post Office (historical) | Fayette | Unknown | |
| Eber Post Office (historical) | Eber Post Office (historical) | Fayette | 997 | Washington Court House |
| Hagler Post Office (historical) | Hagler Post Office (historical) | Fayette | 1030 | Milledgeville |
| Edgefield Post Office (historical) | Edgefield Post Office (historical) | Fayette | 1063 | Bowersville |
| Eli Post Office (historical) | Eli Post Office (historical) | Fayette | Unknown | |
| Cook Post Office (historical) | Cook Post Office (historical) | Fayette | 906 | Mount Sterling |
| Duffs Fork Post Office (historical) | Duffs Fork Post Office (historical) | Fayette | Unknown | |
| Immanuel Post Office (historical) | Immanuel Post Office (historical) | Fayette | Unknown | |
| Selden Post Office (historical) | Selden Post Office (historical) | Fayette | Unknown | |
| Manera Post Office (historical) | Manera Post Office (historical) | Fayette | 899 | New Holland |
| McLean Post Office (historical) | McLean Post Office (historical) | Fayette | 899 | Good Hope |
| Moons Post Office (historical) | Moons Post Office (historical) | Fayette | Unknown | |
| New Martinsburg Post Office (historical) | New Martinsburg Post Office (historical) | Fayette | 991 | New Martinsburg |
| Octa Post Office (historical) | Octa Post Office (historical) | Fayette | 1043 | Milledgeville |
| Pancoastburg Post Office (historical) | Pancoastburg Post Office (historical) | Fayette | 869 | New Holland |
| Parrott Post Office (historical) | Parrott Post Office (historical) | Fayette | 1040 | Milledgeville |
| Phillip Post Office (historical) | Phillip Post Office (historical) | Fayette | Unknown | |
| Rattlesnake Post Office (historical) | Rattlesnake Post Office (historical) | Fayette | Unknown | |
| Staunton Post Office | Staunton Post Office | Fayette | 978 | New Martinsburg |
| Walton Post Office (historical) | Walton Post Office (historical) | Fayette | Unknown | |
| Good Hope Post Office (historical) | Good Hope Post Office (historical) | Fayette | 919 | Good Hope |
| Amlin Post Office | Amlin Post Office | Franklin | 945 | Hilliard |
| Brice Post Office | Brice Post Office | Franklin | 781 | Reynoldsburg |
| Dublin Post Office | Dublin Post Office | Franklin | 827 | Northwest Columbus |
| Galloway Post Office | Galloway Post Office | Franklin | 902 | Galloway |
| Harrisburg Post Office | Harrisburg Post Office | Franklin | 794 | Harrisburg |
| Hilliard Post Office | Hilliard Post Office | Franklin | 932 | Hilliard |
| Lockbourne Post Office | Lockbourne Post Office | Franklin | 686 | Lockbourne |
| Reynoldsburg Post Office | Reynoldsburg Post Office | Franklin | 883 | Reynoldsburg |
| Westerville Post Office | Westerville Post Office | Franklin | 866 | Galena |
| Jeffersonville Post Office | Jeffersonville Post Office | Fayette | 1050 | Jeffersonville |
| Milledgeville Post Office | Milledgeville Post Office | Fayette | 1053 | Milledgeville |
| White Oak Post Office (historical) | White Oak Post Office (historical) | Fayette | 935 | Mount Sterling |
| Yatesville Post Office (historical) | Yatesville Post Office (historical) | Fayette | 1014 | Midway |
| Madison Mills Post Office (historical) | Madison Mills Post Office (historical) | Fayette | 912 | Mount Sterling |
| Main Paint Creek Post Office (historical) | Main Paint Creek Post Office (historical) | Fayette | Unknown | |
| Lutrell Post Office (historical) | Lutrell Post Office (historical) | Fayette | 1053 | Bowersville |
| Otterbein Post Office (historical) | Otterbein Post Office (historical) | Fayette | Unknown | |
| Paint Creek Post Office (historical) | Paint Creek Post Office (historical) | Fayette | Unknown | |
| Pearson Post Office (historical) | Pearson Post Office (historical) | Fayette | 1060 | Bowersville |
| West Lancaster Post Office (historical) | West Lancaster Post Office (historical) | Fayette | 1056 | Milledgeville |
| Alton Post Office (historical) | Alton Post Office (historical) | Franklin | 912 | Galloway |
| Avenue Post Office (historical) | Avenue Post Office (historical) | Franklin | Unknown | |
| Bexley Post Office (historical) | Bexley Post Office (historical) | Franklin | 791 | Southeast Columbus |
| Blendon Post Office (historical) | Blendon Post Office (historical) | Franklin | Unknown | |
| Bliss Post Office (historical) | Bliss Post Office (historical) | Franklin | Unknown | |
| Briggsdale Post Office (historical) | Briggsdale Post Office (historical) | Franklin | 764 | Southwest Columbus |
| Brownsons Station Post Office (historical) | Brownsons Station Post Office (historical) | Franklin | Unknown | |
| Camp Chase Post Office (historical) | Camp Chase Post Office (historical) | Franklin | Unknown | |
| Central College Post Office (historical) | Central College Post Office (historical) | Franklin | 889 | Northeast Columbus |
| Clintonville Post Office (historical) | Clintonville Post Office (historical) | Franklin | Unknown | |
| Cottage Mills Post Office (historical) | Cottage Mills Post Office (historical) | Franklin | Unknown | |
| Darby Post Office (historical) | Darby Post Office (historical) | Franklin | Unknown | |
| Darbydale Post Office (historical) | Darbydale Post Office (historical) | Franklin | 876 | Harrisburg |
| Deans Valley Post Office (historical) | Deans Valley Post Office (historical) | Franklin | Unknown | |
| Deer Creek Post Office (historical) | Deer Creek Post Office (historical) | Franklin | Unknown | |
| East Columbus Post Office (historical) | East Columbus Post Office (historical) | Franklin | 807 | Southeast Columbus |
| Edward Post Office (historical) | Edward Post Office (historical) | Franklin | 755 | Southeast Columbus |
| Flint Post Office (historical) | Flint Post Office (historical) | Franklin | 928 | Powell |
| Marcus Post Office (historical) | Marcus Post Office (historical) | Fayette | Unknown | |
| Backlick Post Office | Backlick Post Office | Franklin | Unknown | |
| Gahanna Post Office (historical) | Gahanna Post Office (historical) | Franklin | 797 | Northeast Columbus |
| Georgesville Post Office | Georgesville Post Office | Franklin | 883 | Galloway |
| Grogan Post Office (historical) | Grogan Post Office (historical) | Franklin | Unknown | |
| Havens Corners Post Office (historical) | Havens Corners Post Office (historical) | Franklin | 974 | New Albany |
| Hayden Post Office (historical) | Hayden Post Office (historical) | Franklin | 948 | Hilliard |
| Hays Post Office (historical) | Hays Post Office (historical) | Franklin | Unknown | |
| Hibernia Post Office (historical) | Hibernia Post Office (historical) | Franklin | Unknown | |
| Seagrave Post Office (historical) | Seagrave Post Office (historical) | Franklin | 761 | Northwest Columbus |
| Leonard Post Office (historical) | Leonard Post Office (historical) | Franklin | Unknown | |
| Linden Heights Post Office (historical) | Linden Heights Post Office (historical) | Franklin | Unknown | |
| Linworth Post Office (historical) | Linworth Post Office (historical) | Franklin | 837 | Northwest Columbus |
| North Broadway Post Office (historical) | North Broadway Post Office (historical) | Franklin | Unknown | |
| Maple Heights Post Office (historical) | Maple Heights Post Office (historical) | Franklin | Unknown | |
| Marblecliff Post Office (historical) | Marblecliff Post Office (historical) | Franklin | 797 | Southwest Columbus |
| Franklinton Post Office (historical) | Franklinton Post Office (historical) | Franklin | Unknown | |
| Valleycrossing Post Office (historical) | Valleycrossing Post Office (historical) | Franklin | 764 | Southeast Columbus |
| Wheatland Post Office (historical) | Wheatland Post Office (historical) | Franklin | Unknown | |
| Wonderland Post Office (historical) | Wonderland Post Office (historical) | Franklin | 791 | New Albany |
| Worthington Post Office (historical) | Worthington Post Office (historical) | Franklin | 863 | Northwest Columbus |
| Zimmer Post Office (historical) | Zimmer Post Office (historical) | Franklin | 758 | Southeast Columbus |
| Zuber Post Office (historical) | Zuber Post Office (historical) | Franklin | 722 | Commercial Point |
| Fayette Post Office | Fayette Post Office | Fulton | 787 | Fayette |
| Lyons Post Office | Lyons Post Office | Fulton | 771 | Lyons |
| Metamora Post Office | Metamora Post Office | Fulton | 722 | Assumption |
| Pettisville Post Office | Pettisville Post Office | Fulton | 758 | Wauseon |
| Swanton Post Office | Swanton Post Office | Fulton | 686 | Swanton |
| Advance Post Office (historical) | Advance Post Office (historical) | Fulton | 774 | Lyons |
| Allston Post Office (historical) | Allston Post Office (historical) | Fulton | Unknown | |
| Ambrose Post Office (historical) | Ambrose Post Office (historical) | Fulton | Unknown | |
| Batdorf Post Office (historical) | Batdorf Post Office (historical) | Fulton | Unknown | |
| Beta Post Office (historical) | Beta Post Office (historical) | Fulton | Unknown | |
| Blanc Post Office (historical) | Blanc Post Office (historical) | Fulton | Unknown | |
| Caraghar Post Office (historical) | Caraghar Post Office (historical) | Fulton | Unknown | |
| Emery Post Office (historical) | Emery Post Office (historical) | Fulton | Unknown | |
| Essex Post Office (historical) | Essex Post Office (historical) | Fulton | Unknown | |
| Groveland Post Office (historical) | Groveland Post Office (historical) | Fulton | Unknown | |
| Handy Post Office (historical) | Handy Post Office (historical) | Fulton | Unknown | |
| Inlet Post Office (historical) | Inlet Post Office (historical) | Fulton | 768 | Morenci |
| Lavona Post Office (historical) | Lavona Post Office (historical) | Fulton | Unknown | |
| Lena Post Office (historical) | Lena Post Office (historical) | Fulton | Unknown | |
| Leslie Post Office (historical) | Leslie Post Office (historical) | Fulton | 732 | Assumption |
| Lytton Post Office (historical) | Lytton Post Office (historical) | Fulton | 745 | Assumption |
| Mill Creek Post Office (historical) | Mill Creek Post Office (historical) | Fulton | Unknown | |
| Milroy Post Office (historical) | Milroy Post Office (historical) | Fulton | Unknown | |
| Parchers Corners Post Office (historical) | Parchers Corners Post Office (historical) | Fulton | Unknown | |
| Pelton Post Office (historical) | Pelton Post Office (historical) | Fulton | Unknown | |
| Plattston Post Office (historical) | Plattston Post Office (historical) | Fulton | 699 | Delta |
| Seward Post Office (historical) | Seward Post Office (historical) | Fulton | 751 | Lyons |
| Siney Post Office (historical) | Siney Post Office (historical) | Fulton | 748 | Assumption |
| Waldeck Post Office (historical) | Waldeck Post Office (historical) | Fulton | Unknown | |
| West Barre Post Office (historical) | West Barre Post Office (historical) | Fulton | Unknown | |
| Thelma Post Office (historical) | Thelma Post Office (historical) | Fulton | 728 | Morenci |
| Zone Post Office (historical) | Zone Post Office (historical) | Fulton | 735 | Archbold |
| Chesterfield Post Office (historical) | Chesterfield Post Office (historical) | Fulton | Unknown | |
| Domino Post Office (historical) | Domino Post Office (historical) | Gallia | Unknown | |
| Durgan Post Office (historical) | Durgan Post Office (historical) | Gallia | 679 | Wilkesville |
| McDaniel Post Office (historical) | McDaniel Post Office (historical) | Gallia | Unknown | |
| Edna Post Office (historical) | Edna Post Office (historical) | Gallia | 607 | Rio Grande |
| Eno Post Office (historical) | Eno Post Office (historical) | Gallia | 646 | Addison |
| Esop Post Office (historical) | Esop Post Office (historical) | Gallia | Unknown | |
| Eureka Post Office (historical) | Eureka Post Office (historical) | Gallia | 568 | Apple Grove |
| Evergreen Post Office (historical) | Evergreen Post Office (historical) | Gallia | 715 | Vinton |
| Gallia Post Office (historical) | Gallia Post Office (historical) | Gallia | 656 | Gallia |
| Flag Spring Post Office (historical) | Flag Spring Post Office (historical) | Gallia | Unknown | |
| Gage Post Office (historical) | Gage Post Office (historical) | Gallia | 673 | Patriot |
| Glenn Post Office (historical) | Glenn Post Office (historical) | Gallia | Unknown | |
| Guyan Post Office (historical) | Guyan Post Office (historical) | Gallia | Unknown | |
| Halley Post Office (historical) | Halley Post Office (historical) | Gallia | 679 | Apple Grove |
| Harris Post Office (historical) | Harris Post Office (historical) | Gallia | Unknown | |
| Harvey Post Office (historical) | Harvey Post Office (historical) | Gallia | Unknown | |
| Hilton Post Office (historical) | Hilton Post Office (historical) | Gallia | 607 | Mercerville |
| Hoadley Post Office (historical) | Hoadley Post Office (historical) | Gallia | 912 | Gallia |
| Holcomb Post Office (historical) | Holcomb Post Office (historical) | Gallia | Unknown | |
| Hollis Post Office (historical) | Hollis Post Office (historical) | Gallia | 686 | Mercerville |
| Jericho Post Office (historical) | Jericho Post Office (historical) | Gallia | Unknown | |
| Glady Post Office (historical) | Glady Post Office (historical) | Gallia | Unknown | |
| Addison Post Office | Addison Post Office | Gallia | 538 | Addison |
| Bidwell Post Office | Bidwell Post Office | Gallia | 682 | Vinton |
| Cheshire Post Office | Cheshire Post Office | Gallia | 571 | Cheshire |
| Crown City Post Office | Crown City Post Office | Gallia | 568 | Athalia |
| Ewington Post Office | Ewington Post Office | Gallia | 669 | Wilkesville |
| Kerr Post Office | Kerr Post Office | Gallia | 610 | Rodney |
| Northup post office | Northup post office | Gallia | 587 | Rodney |
| Patriot Post Office | Patriot Post Office | Gallia | 712 | Patriot |
| Thurman Post Office | Thurman Post Office | Gallia | 682 | Rio Grande |
| Vinton Post Office (historical) | Vinton Post Office (historical) | Gallia | 610 | Vinton |
| Alice Post Office (historical) | Alice Post Office (historical) | Gallia | 709 | Wilkesville |
| Angel Post Office (historical) | Angel Post Office (historical) | Gallia | 574 | Mercerville |
| Angola Post Office (historical) | Angola Post Office (historical) | Gallia | 564 | Apple Grove |
| Ansel Post Office (historical) | Ansel Post Office (historical) | Gallia | Unknown | |
| Bellwoods Post Office (historical) | Bellwoods Post Office (historical) | Gallia | Unknown | |
| Backaller Post Office (historical) | Backaller Post Office (historical) | Gallia | Unknown | |
| Bladen Post Office (historical) | Bladen Post Office (historical) | Gallia | 564 | Apple Grove |
| Blazer Post Office (historical) | Blazer Post Office (historical) | Gallia | Unknown | |
| Boggs Post Office (historical) | Boggs Post Office (historical) | Gallia | 663 | Mercerville |
| Bowler Post Office (historical) | Bowler Post Office (historical) | Gallia | Unknown | |
| Bulaville Post Office (historical) | Bulaville Post Office (historical) | Gallia | 574 | Addison |
| Mercerville Post Office (historical) | Mercerville Post Office (historical) | Gallia | 768 | Mercerville |
| Bush's Mill Post Office (historical) | Bush's Mill Post Office (historical) | Gallia | Unknown | |
| Cadmus Post Office (historical) | Cadmus Post Office (historical) | Gallia | 614 | Patriot |
| Carlton Post Office (historical) | Carlton Post Office (historical) | Gallia | 571 | Cheshire |
| Chapman Mills Post Office (historical) | Chapman Mills Post Office (historical) | Gallia | Unknown | |
| Charity Post Office (historical) | Charity Post Office (historical) | Gallia | Unknown | |
| Chestnutgrove Post Office (historical) | Chestnutgrove Post Office (historical) | Gallia | Unknown | |
| Clemma Post Office (historical) | Clemma Post Office (historical) | Gallia | 571 | Apple Grove |
| Clipper Mills Post Office (historical) | Clipper Mills Post Office (historical) | Gallia | 535 | Gallipolis |
| Cora Post Office (historical) | Cora Post Office (historical) | Gallia | 568 | Rodney |
| Coy Post Office (historical) | Coy Post Office (historical) | Gallia | Unknown | |
| Creuzet Post Office (historical) | Creuzet Post Office (historical) | Gallia | Unknown | |
| Meade Post Office (historical) | Meade Post Office (historical) | Franklin | Unknown | |
| Mifflinville Post Office (historical) | Mifflinville Post Office (historical) | Franklin | 860 | Northeast Columbus |
| Milo Post Office (historical) | Milo Post Office (historical) | Franklin | 807 | Southeast Columbus |
| Monmouth Post Office (historical) | Monmouth Post Office (historical) | Franklin | Unknown | |
| North Columbus Post Office (historical) | North Columbus Post Office (historical) | Franklin | Unknown | |
| Obetz Post Office (historical) | Obetz Post Office (historical) | Franklin | 758 | Southeast Columbus |
| Olentangy Post Office (historical) | Olentangy Post Office (historical) | Franklin | 817 | Northwest Columbus |
| Ovid Post Office (historical) | Ovid Post Office (historical) | Franklin | 1007 | New Albany |
| Park Mills Post Office (historical) | Park Mills Post Office (historical) | Franklin | 807 | Northeast Columbus |
| Philom Post Office (historical) | Philom Post Office (historical) | Franklin | Unknown | |
| Pleasant Corners Post Office (historical) | Pleasant Corners Post Office (historical) | Franklin | 879 | Harrisburg |
| Reeses Post Office (historical) | Reeses Post Office (historical) | Franklin | 738 | Lockbourne |
| Ridpath Post Office (historical) | Ridpath Post Office (historical) | Franklin | 837 | Commercial Point |
| Shadeville Post Office (historical) | Shadeville Post Office (historical) | Franklin | 699 | Commercial Point |
| Shephard Post Office (historical) | Shephard Post Office (historical) | Franklin | 764 | Southeast Columbus |
| Slate Run Post Office (historical) | Slate Run Post Office (historical) | Franklin | Unknown | |
| Smileys Corner Post Office (historical) | Smileys Corner Post Office (historical) | Franklin | Unknown | |
| Taylor Post Office (historical) | Taylor Post Office (historical) | Franklin | 883 | Reynoldsburg |
| Trilby Post Office (historical) | Trilby Post Office (historical) | Franklin | Unknown | |
| Truro Post Office (historical) | Truro Post Office (historical) | Franklin | 833 | Southwest Columbus |
| Urbancrest Post Office (historical) | Urbancrest Post Office (historical) | Franklin | 840 | Southwest Columbus |
| Kanauga Post Office (historical) | Kanauga Post Office (historical) | Gallia | 571 | Gallipolis |
| Klages Post Office (historical) | Klages Post Office (historical) | Gallia | Unknown | |
| Knob Post Office (historical) | Knob Post Office (historical) | Gallia | Unknown | |
| Kyger Post Office (historical) | Kyger Post Office (historical) | Gallia | 604 | Addison |
| Leaper Post Office (historical) | Leaper Post Office (historical) | Gallia | 702 | Mercerville |
| Lincoln Post Office (historical) | Lincoln Post Office (historical) | Gallia | Unknown | |
| Linda Post Office (historical) | Linda Post Office (historical) | Gallia | Unknown | |
| Little Bullskin Post Office (historical) | Little Bullskin Post Office (historical) | Gallia | Unknown | |
| Malaby Post Office (historical) | Malaby Post Office (historical) | Gallia | Unknown | |
| Mapleshade Post Office (historical) | Mapleshade Post Office (historical) | Gallia | 561 | Gallipolis |
| Mattie Post Office (historical) | Mattie Post Office (historical) | Gallia | Unknown | |
| McCormick Post Office (historical) | McCormick Post Office (historical) | Gallia | 620 | Rodney |
| Messersville Post Office (historical) | Messersville Post Office (historical) | Gallia | Unknown | |
| Moody Post Office (historical) | Moody Post Office (historical) | Gallia | 699 | Mercerville |
| Obal Post Office (historical) | Obal Post Office (historical) | Gallia | Unknown | |
| Olive Post Office (historical) | Olive Post Office (historical) | Gallia | Unknown | |
| Paragon Post Office (historical) | Paragon Post Office (historical) | Gallia | Unknown | |
| Peniel Post Office (historical) | Peniel Post Office (historical) | Gallia | 682 | Gallia |
| Porter Post Office (historical) | Porter Post Office (historical) | Gallia | 696 | Vinton |
| Providence Post Office (historical) | Providence Post Office (historical) | Gallia | Unknown | |
| Rowlesville Post Office (historical) | Rowlesville Post Office (historical) | Gallia | 682 | Wilkesville |
| Ruby Post Office (historical) | Ruby Post Office (historical) | Gallia | 1040 | Mercerville |
| Sandfork Post Office (historical) | Sandfork Post Office (historical) | Gallia | 673 | Waterloo |
| Saundersville Post Office (historical) | Saundersville Post Office (historical) | Gallia | Unknown | |
| Siloam Post Office (historical) | Siloam Post Office (historical) | Gallia | 561 | Rodney |
| Slater Post Office (historical) | Slater Post Office (historical) | Gallia | Unknown | |
| Spicy Post Office (historical) | Spicy Post Office (historical) | Gallia | Unknown | |
| Swan Creek Post Office (historical) | Swan Creek Post Office (historical) | Gallia | 525 | Glenwood |
| Thivener Post Office (historical) | Thivener Post Office (historical) | Gallia | 545 | Apple Grove |
| Trace Post Office (historical) | Trace Post Office (historical) | Gallia | Unknown | |
| Tycoon Post Office (historical) | Tycoon Post Office (historical) | Gallia | Unknown | |
| Vancetown Post Office (historical) | Vancetown Post Office (historical) | Gallia | Unknown | |
| Wales Post Office (historical) | Wales Post Office (historical) | Gallia | Unknown | |
| Walnut Ridge Post Office (historical) | Walnut Ridge Post Office (historical) | Gallia | Unknown | |
| White Post Office (historical) | White Post Office (historical) | Gallia | Unknown | |
| Wigner Post Office (historical) | Wigner Post Office (historical) | Gallia | 564 | Rodney |
| Yoyo Post Office (historical) | Yoyo Post Office (historical) | Gallia | Unknown | |
| Bissells Post Office (historical) | Bissells Post Office (historical) | Geauga | Unknown | |
| Bostwick Post Office (historical) | Bostwick Post Office (historical) | Geauga | 1227 | Thompson |
| Bridge Creek Post Office (historical) | Bridge Creek Post Office (historical) | Geauga | Unknown | |
| Bundysburg Post Office (historical) | Bundysburg Post Office (historical) | Geauga | 978 | Middlefield |
| Burton Station Post Office (historical) | Burton Station Post Office (historical) | Geauga | 1145 | Middlefield |
| Calm Post Office (historical) | Calm Post Office (historical) | Geauga | 1024 | Thompson |
| Claridon Post Office (historical) | Claridon Post Office (historical) | Geauga | 1243 | Chardon |
| Damon Post Office (historical) | Damon Post Office (historical) | Geauga | Unknown | |
| Fedo Post Office (historical) | Fedo Post Office (historical) | Geauga | Unknown | |
| Ford Post Office (historical) | Ford Post Office (historical) | Geauga | Unknown | |
| Fullerton Post Office (historical) | Fullerton Post Office (historical) | Geauga | 1079 | South Russell |
| Fowlers Mill Post Office (historical) | Fowlers Mill Post Office (historical) | Geauga | 1168 | Chesterland |
| Garlo Post Office (historical) | Garlo Post Office (historical) | Geauga | Unknown | |
| Grove Post Office (historical) | Grove Post Office (historical) | Geauga | Unknown | |
| Hampden Post Office (historical) | Hampden Post Office (historical) | Geauga | 1299 | Chardon |
| Handy Post Office (historical) | Handy Post Office (historical) | Geauga | Unknown | |
| Joint Post Office (historical) | Joint Post Office (historical) | Geauga | Unknown | |
| Julia Post Office (historical) | Julia Post Office (historical) | Geauga | 1188 | Aurora |
| Mulberry Post Office (historical) | Mulberry Post Office (historical) | Geauga | Unknown | |
| Munson Post Office (historical) | Munson Post Office (historical) | Geauga | Unknown | |
| Nemo Post Office (historical) | Nemo Post Office (historical) | Geauga | Unknown | |
| South Newbury Post Office (historical) | South Newbury Post Office (historical) | Geauga | 1168 | Burton |
| North Newbury Post Office (historical) | North Newbury Post Office (historical) | Geauga | Unknown | |
| Oral Post Office (historical) | Oral Post Office (historical) | Geauga | Unknown | |
| Pond Post Office (historical) | Pond Post Office (historical) | Geauga | Unknown | |
| Russell Post Office (historical) | Russell Post Office (historical) | Geauga | 1093 | South Russell |
| South Thompson Post Office (historical) | South Thompson Post Office (historical) | Geauga | 1165 | Thompson |
| Taylor Post Office (historical) | Taylor Post Office (historical) | Geauga | Unknown | |
| Trumbulls Mills Post Office (historical) | Trumbulls Mills Post Office (historical) | Geauga | Unknown | |
| Welshfield Post Office (historical) | Welshfield Post Office (historical) | Geauga | 1184 | Middlefield |
| Parkman Post Office | Parkman Post Office | Geauga | 1106 | Garrettsville |
| Thompson Post Office | Thompson Post Office | Geauga | 1273 | Thompson |
| Metals Park Post Office | Metals Park Post Office | Geauga | Unknown | |
| Middlefield Post Office | Middlefield Post Office | Geauga | 1178 | Middlefield |
| Middlfield Post Office | Middlfield Post Office | Geauga | 1122 | Middlefield |
| Montville Post Office | Montville Post Office | Geauga | 1220 | East Claridon |
| Newbury Post Office | Newbury Post Office | Geauga | Unknown | |
| Burton Post Office | Burton Post Office | Geauga | Unknown | |
| Chardon Post Office | Chardon Post Office | Geauga | 1302 | Chardon |
| East Claridon Post Office (historical) | East Claridon Post Office (historical) | Geauga | 1217 | East Claridon |
| Huntsburg Post Office | Huntsburg Post Office | Geauga | 1247 | East Claridon |
| Alpha Post Office | Alpha Post Office | Greene | 801 | Bellbrook |
| Bellbrook Post Office | Bellbrook Post Office | Greene | 787 | Bellbrook |
| Bowersville Post Office | Bowersville Post Office | Greene | 1089 | Bowersville |
| Cedarville Post Office | Cedarville Post Office | Greene | 1050 | Cedarville |
| Clifton Post Office | Clifton Post Office | Greene | Unknown | |
| Jamestown Post Office | Jamestown Post Office | Greene | 1060 | Jamestown |
| Spring Post Office | Spring Post Office | Greene | 761 | Waynesville |
| Yellow Springs Post Office | Yellow Springs Post Office | Greene | 833 | Higginsport |
| Byron Post Office (historical) | Byron Post Office (historical) | Greene | 919 | Yellow Springs |
| Clio Post Office (historical) | Clio Post Office (historical) | Greene | Unknown | |
| Deerfield Post Office (historical) | Deerfield Post Office (historical) | Greene | Unknown | |
| Eureka Mills Post Office (historical) | Eureka Mills Post Office (historical) | Greene | Unknown | |
| Ferry Post Office (historical) | Ferry Post Office (historical) | Greene | 978 | Waynesville |
| Gladstone Post Office (historical) | Gladstone Post Office (historical) | Greene | 1106 | Jamestown |
| Goes Post Office (historical) | Goes Post Office (historical) | Greene | 883 | Yellow Springs |
| Grapegrove Post Office (historical) | Grapegrove Post Office (historical) | Greene | 1093 | Jamestown |
| Huffersville Post Office (historical) | Huffersville Post Office (historical) | Greene | Unknown | |
| Kneisley Post Office (historical) | Kneisley Post Office (historical) | Greene | Unknown | |
| New Jasper Post Office (historical) | New Jasper Post Office (historical) | Greene | 1027 | Cedarville |
| Old Town Post Office (historical) | Old Town Post Office (historical) | Greene | 820 | Xenia |
| Paintersville Post Office (historical) | Paintersville Post Office (historical) | Greene | 1017 | Port William |
| Rossman's Post Office (historical) | Rossman's Post Office (historical) | Greene | Unknown | |
| Ross Township Post Office (historical) | Ross Township Post Office (historical) | Greene | Unknown | |
| Roxanna Post Office (historical) | Roxanna Post Office (historical) | Greene | 751 | Waynesville |
| Trebeins Post Office (historical) | Trebeins Post Office (historical) | Greene | 797 | Xenia |
| Zimmerman Post Office (historical) | Zimmerman Post Office (historical) | Greene | 899 | Bellbrook |
| Wilberforce Post Office | Wilberforce Post Office | Greene | 1010 | Xenia |
| Spring Valley Post Office | Spring Valley Post Office | Greene | 761 | Waynesville |
| Aix Post Office (historical) | Aix Post Office (historical) | Guernsey | Unknown | |
| Antrim Post Office (historical) | Antrim Post Office (historical) | Guernsey | 1020 | Antrim |
| Birds Run Post Office (historical) | Birds Run Post Office (historical) | Guernsey | 755 | Plainfield |
| Blue Bell Post Office (historical) | Blue Bell Post Office (historical) | Guernsey | 807 | Byesville |
| Boden Post Office (historical) | Boden Post Office (historical) | Guernsey | 1083 | Bloomfield |
| Bond Post Office (historical) | Bond Post Office (historical) | Guernsey | Unknown | |
| Brady Post Office (historical) | Brady Post Office (historical) | Guernsey | 797 | Old Washington |
| Cable Post Office (historical) | Cable Post Office (historical) | Guernsey | Unknown | |
| Calihan Post Office (historical) | Calihan Post Office (historical) | Guernsey | Unknown | |
| Winterset Post Office (historical) | Winterset Post Office (historical) | Guernsey | 833 | Old Washington |
| Clio Post Office (historical) | Clio Post Office (historical) | Guernsey | 837 | Cambridge |
| Craig Post Office (historical) | Craig Post Office (historical) | Guernsey | 932 | Cambridge |
| Creighton Post Office (historical) | Creighton Post Office (historical) | Guernsey | Unknown | |
| Auburn Post Office (historical) | Auburn Post Office (historical) | Geauga | Unknown | |
| Byesville Post Office | Byesville Post Office | Guernsey | 810 | Byesville |
| Claysville Post Office | Claysville Post Office | Guernsey | 1050 | New Concord |
| Cumberland Post Office | Cumberland Post Office | Guernsey | 843 | Cumberland |
| Derwent Post Office | Derwent Post Office | Guernsey | 814 | Byesville |
| Pleasant City Post Office | Pleasant City Post Office | Guernsey | 814 | Byesville |
| Fairview Post Office | Fairview Post Office | Guernsey | 919 | Byesville |
| Lore City Post Office | Lore City Post Office | Guernsey | 817 | Senecaville |
| Guernsey Post Office | Guernsey Post Office | Guernsey | 787 | Kimbolton |
| Kimbolton Post Office | Kimbolton Post Office | Guernsey | 801 | Kimbolton |
| Kipling Post Office | Kipling Post Office | Guernsey | 823 | Byesville |
| Quaker City Post Office | Quaker City Post Office | Guernsey | 968 | Byesville |
| Oakgrove Post Office (historical) | Oakgrove Post Office (historical) | Guernsey | 1243 | Piedmont |
| Old Washington Post Office (historical) | Old Washington Post Office (historical) | Guernsey | 1037 | Old Washington |
| Salesville Post Office | Salesville Post Office | Guernsey | 860 | Quaker City |
| Senecaville Post Office | Senecaville Post Office | Guernsey | 906 | Senecaville |
| Danford Post Office (historical) | Danford Post Office (historical) | Guernsey | Unknown | |
| Divide Post Office (historical) | Divide Post Office (historical) | Guernsey | Unknown | |
| Indian Camp Post Office (historical) | Indian Camp Post Office (historical) | Guernsey | 1043 | Bloomfield |
| Flat Ridge Post Office (historical) | Flat Ridge Post Office (historical) | Guernsey | 1066 | Plainfield |
| Frisco Post Office (historical) | Frisco Post Office (historical) | Guernsey | Unknown | |
| Galigher Post Office (historical) | Galigher Post Office (historical) | Guernsey | Unknown | |
| Gibson Post Office (historical) | Gibson Post Office (historical) | Guernsey | 853 | Senecaville |
| Odell Post Office (historical) | Odell Post Office (historical) | Guernsey | 978 | Birmingham |
| Oldham Post Office (historical) | Oldham Post Office (historical) | Guernsey | 781 | Cambridge |
| Opperman Post Office (historical) | Opperman Post Office (historical) | Guernsey | 837 | Byesville |
| Oxford Mills Post Office (historical) | Oxford Mills Post Office (historical) | Guernsey | Unknown | |
| Morgan Junction Post Office (historical) | Morgan Junction Post Office (historical) | Guernsey | Unknown | |
| New Concord Post Office (historical) | New Concord Post Office (historical) | Guernsey | Unknown | |
| North Concord Post Office (historical) | North Concord Post Office (historical) | Guernsey | Unknown | |
| North Salem Post Office (historical) | North Salem Post Office (historical) | Guernsey | 994 | Kimbolton |
| Oakland Mills Post Office (historical) | Oakland Mills Post Office (historical) | Guernsey | Unknown | |
| Middlebourne Post Office (historical) | Middlebourne Post Office (historical) | Guernsey | 876 | Antrim |
| Midway Post Office (historical) | Midway Post Office (historical) | Guernsey | Unknown | |
| Milner's Mill Post Office (historical) | Milner's Mill Post Office (historical) | Guernsey | Unknown | |
| Milnersville Post Office (historical) | Milnersville Post Office (historical) | Guernsey | Unknown | |
| Harmony Post Office (historical) | Harmony Post Office (historical) | Guernsey | Unknown | |
| Londonderry Post Office (historical) | Londonderry Post Office (historical) | Guernsey | 1138 | Freeport |
| Lucasburg Post Office (historical) | Lucasburg Post Office (historical) | Guernsey | 846 | Byesville |
| Parkinson's Cross Roads Post Office (historical) | Parkinson's Cross Roads Post Office (historical) | Guernsey | Unknown | |
| Prohibition Post Office (historical) | Prohibition Post Office (historical) | Guernsey | Unknown | |
| Robins Post Office (historical) | Robins Post Office (historical) | Guernsey | 840 | Byesville |
| Skullfork Post Office (historical) | Skullfork Post Office (historical) | Guernsey | Unknown | |
| Sligo Post Office (historical) | Sligo Post Office (historical) | Guernsey | Unknown | |
| Spencer's Station Post Office (historical) | Spencer's Station Post Office (historical) | Guernsey | 873 | Quaker City |
| Sugartree Post Office (historical) | Sugartree Post Office (historical) | Guernsey | Unknown | |
| Sutton Post Office (historical) | Sutton Post Office (historical) | Guernsey | Unknown | |
| Tyner Post Office (historical) | Tyner Post Office (historical) | Guernsey | 787 | Cambridge |
| Westland Post Office (historical) | Westland Post Office (historical) | Guernsey | Unknown | |
| Whynot Post Office (historical) | Whynot Post Office (historical) | Guernsey | Unknown | |
| Buffalo Post Office | Buffalo Post Office | Guernsey | 850 | Byesville |
| Guild Post Office (historical) | Guild Post Office (historical) | Guernsey | Unknown | |
| Beechwood Post Office (historical) | Beechwood Post Office (historical) | Hamilton | 850 | Cincinnati East |
| Bevis Post Office (historical) | Bevis Post Office (historical) | Hamilton | 886 | Greenhills |
| Biddinger Post Office (historical) | Biddinger Post Office (historical) | Hamilton | Unknown | |
| Andersons Ferry Post Office (historical) | Andersons Ferry Post Office (historical) | Hamilton | 499 | Covington |
| Arlington Heights Post Office (historical) | Arlington Heights Post Office (historical) | Hamilton | 554 | Cincinnati East |
| Asbury Post Office (historical) | Asbury Post Office (historical) | Hamilton | 830 | Withamsville |
| Barnesburgh Post Office (historical) | Barnesburgh Post Office (historical) | Hamilton | 810 | Cincinnati West |
| Bond Hill Post Office (historical) | Bond Hill Post Office (historical) | Hamilton | 614 | Cincinnati East |
| Brecon Post Office (historical) | Brecon Post Office (historical) | Hamilton | 869 | Mason |
| Bridgetown Post Office (historical) | Bridgetown Post Office (historical) | Hamilton | 896 | Addyston |
| Burnet Wood Post Office (historical) | Burnet Wood Post Office (historical) | Hamilton | Unknown | |
| California Post Office (historical) | California Post Office (historical) | Hamilton | 502 | Newport |
| Camp Dennison Community Post Office (historical) | Camp Dennison Community Post Office (historical) | Hamilton | 577 | Madeira |
| College Hill Post Office (historical) | College Hill Post Office (historical) | Hamilton | 892 | Cincinnati West |
| Carthage Post Office (historical) | Carthage Post Office (historical) | Hamilton | 548 | Cincinnati East |
| Ellenora Post Office (historical) | Ellenora Post Office (historical) | Hamilton | 712 | Withamsville |
| Dent Post Office (historical) | Dent Post Office (historical) | Hamilton | 833 | Addyston |
| Cherry Grove Post Office (historical) | Cherry Grove Post Office (historical) | Hamilton | 876 | Withamsville |
| Clarks Store Post Office (historical) | Clarks Store Post Office (historical) | Hamilton | Unknown | |
| Cluff Post Office (historical) | Cluff Post Office (historical) | Hamilton | Unknown | |
| Colonge Post Office (historical) | Colonge Post Office (historical) | Hamilton | Unknown | |
| Columbia Post Office (historical) | Columbia Post Office (historical) | Hamilton | 515 | Newport |
| Covedale Post Office (historical) | Covedale Post Office (historical) | Hamilton | 886 | Covington |
| Creedville Post Office (historical) | Creedville Post Office (historical) | Hamilton | Unknown | |
| Deer Park Post Office (historical) | Deer Park Post Office (historical) | Hamilton | 869 | Cincinnati East |
| Delhi Post Office (historical) | Delhi Post Office (historical) | Hamilton | 899 | Covington |
| Elmwood Place Post Office (historical) | Elmwood Place Post Office (historical) | Hamilton | 525 | Cincinnati East |
| Fernbank Post Office (historical) | Fernbank Post Office (historical) | Hamilton | 522 | Addyston |
| Forestville Post Office (historical) | Forestville Post Office (historical) | Hamilton | 823 | Withamsville |
| Columbia Post Office (historical) | Columbia Post Office (historical) | Hamilton | Unknown | |
| Crescentville Post Office (historical) | Crescentville Post Office (historical) | Hamilton | 633 | Glendale |
| Crestvue Post Office (historical) | Crestvue Post Office (historical) | Hamilton | Unknown | |
| Crosby Post Office (historical) | Crosby Post Office (historical) | Hamilton | Unknown | |
| Cummensville Post Office (historical) | Cummensville Post Office (historical) | Hamilton | Unknown | |
| Cuminsville Post Office (historical) | Cuminsville Post Office (historical) | Hamilton | 525 | Cincinnati West |
| Dry Fork Post Office (historical) | Dry Fork Post Office (historical) | Hamilton | Unknown | |
| Dry Ridge Post Office (historical) | Dry Ridge Post Office (historical) | Hamilton | 915 | Greenhills |
| Dunlap Post Office (historical) | Dunlap Post Office (historical) | Hamilton | 843 | Greenhills |
| East Sycamore Post Office (historical) | East Sycamore Post Office (historical) | Hamilton | Unknown | |
| Eightmile Post Office (historical) | Eightmile Post Office (historical) | Hamilton | 489 | Withamsville |
| Elizabethtown Post Office (historical) | Elizabethtown Post Office (historical) | Hamilton | 489 | Hooven |
| Evendale Post Office (historical) | Evendale Post Office (historical) | Hamilton | 594 | Glendale |
| Glendale Post Office (historical) | Glendale Post Office (historical) | Hamilton | 636 | Glendale |
| Fruithill Post Office (historical) | Fruithill Post Office (historical) | Hamilton | 728 | Withamsville |
| Fulton Post Office (historical) | Fulton Post Office (historical) | Hamilton | 551 | Newport |
| Groesbeck Post Office (historical) | Groesbeck Post Office (historical) | Hamilton | 856 | Cincinnati West |
| Valley Juntion Post Office (historical) | Valley Juntion Post Office (historical) | Hamilton | 495 | Hooven |
| Hartwell Post Office (historical) | Hartwell Post Office (historical) | Hamilton | 554 | Cincinnati East |
| Hazlewood Post Office (historical) | Hazlewood Post Office (historical) | Hamilton | 843 | Mason |
| Sayler Park Post Office (historical) | Sayler Park Post Office (historical) | Hamilton | 525 | Burlington |
| Hutchinsons Post Office (historical) | Hutchinsons Post Office (historical) | Hamilton | Unknown | |
| Indian Hill Post Office (historical) | Indian Hill Post Office (historical) | Hamilton | 682 | Cincinnati East |
| Hydepark Post Office (historical) | Hydepark Post Office (historical) | Hamilton | 666 | Cincinnati East |
| Idlewild Post Office (historical) | Idlewild Post Office (historical) | Hamilton | 682 | Cincinnati East |
| Hygeia Post Office (historical) | Hygeia Post Office (historical) | Hamilton | Unknown | |
| Ivanhoe Post Office (historical) | Ivanhoe Post Office (historical) | Hamilton | Unknown | |
| Ivorydale Post Office (historical) | Ivorydale Post Office (historical) | Hamilton | 528 | Cincinnati East |
| Kennedy Post Office (historical) | Kennedy Post Office (historical) | Hamilton | Unknown | |
| Lick Run Post Office (historical) | Lick Run Post Office (historical) | Hamilton | Unknown | |
| Linwood Post Office (historical) | Linwood Post Office (historical) | Hamilton | 492 | Cincinnati East |
| Lockland Post Office (historical) | Lockland Post Office (historical) | Hamilton | 581 | Cincinnati East |
| Harrison Post Office | Harrison Post Office | Hamilton | 525 | Harrison |
| West Riverside Post Office (historical) | West Riverside Post Office (historical) | Hamilton | Unknown | |
| Hooven Post Office | Hooven Post Office | Hamilton | 518 | Hooven |
| Miamitown Post Office | Miamitown Post Office | Hamilton | 522 | Addyston |
| Mount Saint Joseph Post Office | Mount Saint Joseph Post Office | Hamilton | 830 | Burlington |
| North Bend Post Office | North Bend Post Office | Hamilton | 577 | Addyston |
| Terrace Park Post Office | Terrace Park Post Office | Hamilton | 564 | Madeira |
| Loveland Post Office | Loveland Post Office | Hamilton | 597 | Mason |
| Saint Bernard Post Office (historical) | Saint Bernard Post Office (historical) | Hamilton | 554 | Cincinnati East |
| Mack Post Office (historical) | Mack Post Office (historical) | Hamilton | 899 | Addyston |
| Madisonville Post Office (historical) | Madisonville Post Office (historical) | Hamilton | 597 | Cincinnati East |
| Mechanics Row Post Office (historical) | Mechanics Row Post Office (historical) | Hamilton | Unknown | |
| Medoc Post Office (historical) | Medoc Post Office (historical) | Hamilton | Unknown | |
| Miami Post Office (historical) | Miami Post Office (historical) | Hamilton | Unknown | |
| Rossmoyne Post Office (historical) | Rossmoyne Post Office (historical) | Hamilton | 833 | Cincinnati East |
| Millersville Post Office (historical) | Millersville Post Office (historical) | Hamilton | Unknown | |
| Monfort Post Office (historical) | Monfort Post Office (historical) | Hamilton | Unknown | |
| Montauk Post Office (historical) | Montauk Post Office (historical) | Hamilton | Unknown | |
| Montgomery Post Office (historical) | Montgomery Post Office (historical) | Hamilton | 801 | Madeira |
| Silverton Post Office (historical) | Silverton Post Office (historical) | Hamilton | 853 | Cincinnati East |
| Mount Airy Post Office (historical) | Mount Airy Post Office (historical) | Hamilton | 935 | Cincinnati West |
| Mount Healthy Post Office (historical) | Mount Healthy Post Office (historical) | Hamilton | 843 | Cincinnati West |
| Mount Lookout Post Office (historical) | Mount Lookout Post Office (historical) | Hamilton | 587 | Cincinnati East |
| Mount Summit Post Office (historical) | Mount Summit Post Office (historical) | Hamilton | 869 | Withamsville |
| New Burlington Post Office (historical) | New Burlington Post Office (historical) | Hamilton | 820 | Greenhills |
| Preston Post Office (historical) | Preston Post Office (historical) | Hamilton | Unknown | |
| Oakley Post Office (historical) | Oakley Post Office (historical) | Hamilton | 604 | Cincinnati East |
| Plainville Post Office (historical) | Plainville Post Office (historical) | Hamilton | 659 | Cincinnati West |
| Pleasant Ridge Post Office (historical) | Pleasant Ridge Post Office (historical) | Hamilton | 794 | Cincinnati East |
| Reading Post Office (historical) | Reading Post Office (historical) | Hamilton | 561 | Cincinnati East |
| Red Bank Post Office (historical) | Red Bank Post Office (historical) | Hamilton | 509 | Cincinnati East |
| Remington Post Office (historical) | Remington Post Office (historical) | Hamilton | 577 | Madeira |
| Riverside Post Office (historical) | Riverside Post Office (historical) | Hamilton | 525 | Covington |
| Snyder Post Office (historical) | Snyder Post Office (historical) | Hamilton | Unknown | |
| Taylors Creek Post Office (historical) | Taylors Creek Post Office (historical) | Hamilton | 568 | Addyston |
| Walnut Hills Post Office (historical) | Walnut Hills Post Office (historical) | Hamilton | 804 | Cincinnati East |
| Westwood Post Office (historical) | Westwood Post Office (historical) | Hamilton | 899 | Cincinnati West |
| Winton Place Post Office (historical) | Winton Place Post Office (historical) | Hamilton | 541 | Cincinnati West |
| Wyoming Post Office (historical) | Wyoming Post Office (historical) | Hamilton | 574 | Cincinnati East |
| Pleasant Run Post Office | Pleasant Run Post Office | Hamilton | 748 | Greenhills |
| Pleasant Valley Post Office (historical) | Pleasant Valley Post Office (historical) | Hamilton | Unknown | |
| Revere Post Office (historical) | Revere Post Office (historical) | Hamilton | Unknown | |
| Round Bottom Mills Post Office (historical) | Round Bottom Mills Post Office (historical) | Hamilton | Unknown | |
| Sater Post Office (historical) | Sater Post Office (historical) | Hamilton | Unknown | |
| Sekitan Post Office (historical) | Sekitan Post Office (historical) | Hamilton | 581 | Addyston |
| Sharonville Post Office (historical) | Sharonville Post Office (historical) | Hamilton | 587 | Glendale |
| Sixteen Mile Stand Post Office (historical) | Sixteen Mile Stand Post Office (historical) | Hamilton | 804 | Mason |
| Trautman Post Office (historical) | Trautman Post Office (historical) | Hamilton | Unknown | |
| South Pendleton Post Office (historical) | South Pendleton Post Office (historical) | Hamilton | Unknown | |
| Springdale Post Office (historical) | Springdale Post Office (historical) | Hamilton | Unknown | |
| Storrs Post Office (historical) | Storrs Post Office (historical) | Hamilton | 518 | Covington |
| Sweetwine Post Office (historical) | Sweetwine Post Office (historical) | Hamilton | 509 | Newport |
| Symmes Post Office (historical) | Symmes Post Office (historical) | Hamilton | 925 | Withamsville |
| Transit Post Office (historical) | Transit Post Office (historical) | Hamilton | Unknown | |
| Twithtwee Post Office (historical) | Twithtwee Post Office (historical) | Hamilton | Unknown | |
| White Water Post Office (historical) | White Water Post Office (historical) | Hamilton | Unknown | |
| Woodlawn Post Office (historical) | Woodlawn Post Office (historical) | Hamilton | 584 | Glendale |
| Arcadia Post Office | Arcadia Post Office | Hancock | 807 | Arcadia |
| Arlington Post Office (historical) | Arlington Post Office (historical) | Hancock | 863 | Arlington |
| Benton Post Office | Benton Post Office | Hancock | 787 | McComb |
| Findlay Post Office | Findlay Post Office | Hancock | 778 | Findlay |
| Jenera Post Office | Jenera Post Office | Hancock | 853 | Arlington |
| McComb Post Office | McComb Post Office | Hancock | 771 | McComb |
| Mount Blanchard Post Office | Mount Blanchard Post Office | Hancock | 846 | Mount Blanchard |
| Mount Corey Post Office | Mount Corey Post Office | Hancock | 810 | Rawson |
| Rawson Post Office | Rawson Post Office | Hancock | 814 | Rawson |
| Van Buren Post Office | Van Buren Post Office | Hancock | 764 | North Baltimore |
| Vanlue Post Office | Vanlue Post Office | Hancock | 823 | Carey |
| Williamstown Post Office | Williamstown Post Office | Hancock | 935 | Dunkirk |
| Alba Post Office (historical) | Alba Post Office (historical) | Hancock | Unknown | |
| Ashery Post Office (historical) | Ashery Post Office (historical) | Hancock | Unknown | |
| Beagle Post Office (historical) | Beagle Post Office (historical) | Hancock | 840 | Arlington |
| Big Lick Post Office (historical) | Big Lick Post Office (historical) | Hancock | Unknown | |
| Blanchard Bridge Post Office (historical) | Blanchard Bridge Post Office (historical) | Hancock | Unknown | |
| Bloody Eagle Office (historical) | Bloody Eagle Office (historical) | Hancock | Unknown | |
| Calvin Post Office (historical) | Calvin Post Office (historical) | Hancock | Unknown | |
| Cannonsburg Post Office (historical) | Cannonsburg Post Office (historical) | Hancock | Unknown | |
| Cass Post Office (historical) | Cass Post Office (historical) | Hancock | Unknown | |
| Clement Post Office (historical) | Clement Post Office (historical) | Hancock | Unknown | |
| Cordelia Post Office (historical) | Cordelia Post Office (historical) | Hancock | 846 | Rawson |
| Curtellis Post Office (historical) | Curtellis Post Office (historical) | Hancock | Unknown | |
| Marvins Mill Post Office (historical) | Marvins Mill Post Office (historical) | Hancock | Unknown | |
| Hassan Post Office (historical) | Hassan Post Office (historical) | Hancock | 909 | Ada |
| Deweyville Post Office (historical) | Deweyville Post Office (historical) | Hancock | 735 | Hoytville |
| Lye Creek Post Office (historical) | Lye Creek Post Office (historical) | Hancock | Unknown | |
| Houcktown Post Office (historical) | Houcktown Post Office (historical) | Hancock | 830 | Mount Blanchard |
| Huber Post Office (historical) | Huber Post Office (historical) | Hancock | Unknown | |
| Moffitt Post Office (historical) | Moffitt Post Office (historical) | Hancock | 748 | McComb |
| Mortimer Post Office (historical) | Mortimer Post Office (historical) | Hancock | 804 | Findlay |
| North Stark Post Office (historical) | North Stark Post Office (historical) | Hancock | 932 | Dunkirk |
| North Ridge Post Office (historical) | North Ridge Post Office (historical) | Hancock | Unknown | |
| Oak Ridge Post Office (historical) | Oak Ridge Post Office (historical) | Hancock | Unknown | |
| Portage Center Post Office (historical) | Portage Center Post Office (historical) | Hancock | 751 | Findlay |
| Ourys Post Office (historical) | Ourys Post Office (historical) | Hamilton | Unknown | |
| Alger Post Office | Alger Post Office | Hardin | 974 | Alger |
| Dola Post Office | Dola Post Office | Hardin | 948 | Dunkirk |
| Dunkirk Post Office (historical) | Dunkirk Post Office (historical) | Hardin | 945 | Dunkirk |
| McGuffey Post Office | McGuffey Post Office | Hardin | 971 | Alger |
| McVictory Post Office | McVictory Post Office | Hardin | 1040 | Mount Victory |
| Patterson Post Office | Patterson Post Office | Hardin | 915 | Forest |
| Ridgeway Post Office | Ridgeway Post Office | Hardin | 1060 | Mount Victory |
| Roundhead Post Office | Roundhead Post Office | Hardin | 1001 | Roundhead |
| Blanchard Post Office (historical) | Blanchard Post Office (historical) | Hardin | 951 | Foraker |
| Dempster Post Office (historical) | Dempster Post Office (historical) | Hardin | Unknown | |
| Dudley Post Office (historical) | Dudley Post Office (historical) | Hardin | Unknown | |
| Foraker Post Office (historical) | Foraker Post Office (historical) | Hardin | 971 | Foraker |
| Grant Post Office (historical) | Grant Post Office (historical) | Hardin | 932 | Kenton |
| Grassy Point Post Office (historical) | Grassy Point Post Office (historical) | Hardin | 1047 | Mount Victory |
| Hardy Post Office (historical) | Hardy Post Office (historical) | Hardin | Unknown | |
| Hepburn Post Office (historical) | Hepburn Post Office (historical) | Hardin | 948 | La Rue |
| Holden Post Office (historical) | Holden Post Office (historical) | Hardin | Unknown | |
| Huntersville Post Office (historical) | Huntersville Post Office (historical) | Hardin | 981 | Alger |
| Jumbo Post Office (historical) | Jumbo Post Office (historical) | Hardin | 1066 | Roundhead |
| Jump Post Office (historical) | Jump Post Office (historical) | Hardin | 1010 | Roundhead |
| McDonald Post Office (historical) | McDonald Post Office (historical) | Hardin | Unknown | |
| Pfeiffer Post Office (historical) | Pfeiffer Post Office (historical) | Hardin | 948 | La Rue |
| Robbertson Post Office (historical) | Robbertson Post Office (historical) | Hardin | Unknown | |
| Round Head Post Office (historical) | Round Head Post Office (historical) | Hardin | Unknown | |
| Silvercreek Post Office (historical) | Silvercreek Post Office (historical) | Hardin | 1063 | Silver Creek |
| Yelverton Post Office (historical) | Yelverton Post Office (historical) | Hardin | 1086 | Silver Creek |
| Shawtown Post Office (historical) | Shawtown Post Office (historical) | Hamilton | 741 | McComb |
| Swank Post Office (historical) | Swank Post Office (historical) | Hamilton | Unknown | |
| West Independence Post Office (historical) | West Independence Post Office (historical) | Hamilton | 837 | Alvada |
| Wineland Post Office (historical) | Wineland Post Office (historical) | Hamilton | Unknown | |
| Bargar Post Office (historical) | Bargar Post Office (historical) | Harrison | Unknown | |
| Blairmont Post Office (historical) | Blairmont Post Office (historical) | Harrison | 919 | Harrisville |
| Carman Post Office (historical) | Carman Post Office (historical) | Harrison | 1001 | Cadiz |
| Cassville Post Office (historical) | Cassville Post Office (historical) | Harrison | 1211 | Flushing |
| Clear Fork Post Office (historical) | Clear Fork Post Office (historical) | Harrison | Unknown | |
| Clendening Post Office (historical) | Clendening Post Office (historical) | Harrison | 1096 | Deersville |
| Cold Spring Post Office (historical) | Cold Spring Post Office (historical) | Harrison | Unknown | |
| Conotton Post Office (historical) | Conotton Post Office (historical) | Harrison | 968 | Bowerston |
| Duncanwood Post Office (historical) | Duncanwood Post Office (historical) | Harrison | 1076 | Harrisville |
| Enfield Post Office (historical) | Enfield Post Office (historical) | Harrison | 945 | Jewett |
| Estep Post Office (historical) | Estep Post Office (historical) | Harrison | Unknown | |
| Feed Spring Post Office (historical) | Feed Spring Post Office (historical) | Harrison | 1086 | Tippecanoe |
| Fife Post Office (historical) | Fife Post Office (historical) | Harrison | Unknown | |
| Wabash Post Office (historical) | Wabash Post Office (historical) | Harrison | Unknown | |
| Germano Post Office (historical) | Germano Post Office (historical) | Harrison | 1319 | Amsterdam |
| Hurford Post Office (historical) | Hurford Post Office (historical) | Harrison | 912 | Harrisville |
| Ida Post Office (historical) | Ida Post Office (historical) | Harrison | Unknown | |
| Kenwood Post Office (historical) | Kenwood Post Office (historical) | Harrison | 984 | Cadiz |
| Laceyville Post Office (historical) | Laceyville Post Office (historical) | Harrison | 902 | Deersville |
| Manly Post Office (historical) | Manly Post Office (historical) | Harrison | Unknown | |
| McKeown Post Office (historical) | McKeown Post Office (historical) | Harrison | Unknown | |
| Means Post Office (historical) | Means Post Office (historical) | Harrison | Unknown | |
| Miller Station Post Office (historical) | Miller Station Post Office (historical) | Harrison | Unknown | |
| Moraville Post Office (historical) | Moraville Post Office (historical) | Harrison | 1211 | Jewett |
| Nottingham Post Office (historical) | Nottingham Post Office (historical) | Harrison | 1253 | Flushing |
| Pleasant Mount Post Office (historical) | Pleasant Mount Post Office (historical) | Harrison | Unknown | |
| Richards Post Office (historical) | Richards Post Office (historical) | Harrison | Unknown | |
| Robyville Post Office (historical) | Robyville Post Office (historical) | Harrison | Unknown | |
| Science Hill Post Office (historical) | Science Hill Post Office (historical) | Harrison | 1178 | Harrisville |
| Smithdale Post Office (historical) | Smithdale Post Office (historical) | Harrison | 1171 | Deersville |
| Smyrna Post Office (historical) | Smyrna Post Office (historical) | Harrison | 1188 | Piedmont |
| Arcadia Post Office (historical) | Arcadia Post Office (historical) | Harrison | Unknown | |
| Rocky Ridge Post Office (historical) | Rocky Ridge Post Office (historical) | Hamilton | Unknown | |
| Stacy Post Office (historical) | Stacy Post Office (historical) | Harrison | 968 | Jewett |
| Station Post Office (historical) | Station Post Office (historical) | Harrison | 863 | Uhrichsville |
| Stock Township Post Office (historical) | Stock Township Post Office (historical) | Harrison | Unknown | |
| Tappan Post Office (historical) | Tappan Post Office (historical) | Harrison | 942 | Deersville |
| Tariff Post Office (historical) | Tariff Post Office (historical) | Harrison | Unknown | |
| Titus' Store Post Office (historical) | Titus' Store Post Office (historical) | Harrison | Unknown | |
| Unionvale Post Office (historical) | Unionvale Post Office (historical) | Harrison | 997 | Cadiz |
| Veto Post Office (historical) | Veto Post Office (historical) | Harrison | Unknown | |
| Hopedale Post Office | Hopedale Post Office | Harrison | 1158 | Cadiz |
| Bowerston Post Office | Bowerston Post Office | Harrison | 965 | Bowerston |
| Deersville Post Office | Deersville Post Office | Harrison | 1250 | Deersville |
| Freeport Post Office | Freeport Post Office | Harrison | 1001 | Freeport |
| Harrison Post Office | Harrison Post Office | Harrison | 1070 | Harrisville |
| Jewett Post Office | Jewett Post Office | Harrison | 1125 | Jewett |
| Moorefield Post Office | Moorefield Post Office | Harrison | 1234 | Piedmont |
| New Athens Post Office | New Athens Post Office | Harrison | 1184 | Harrisville |
| Ginther Post Office | Ginther Post Office | Harrison | 1168 | Harrisville |
| Greenough Post Office | Greenough Post Office | Harrison | Unknown | |
| Hattonia Post Office | Hattonia Post Office | Harrison | 1197 | Deersville |
| Hellers Cross Roads Post Office | Hellers Cross Roads Post Office | Harrison | Unknown | |
| New Rumley Post Office | New Rumley Post Office | Harrison | 1234 | Scio |
| Tippecanoe Post Office | Tippecanoe Post Office | Harrison | 876 | Tippecanoe |
| Piedmont Post Office | Piedmont Post Office | Harrison | 925 | Piedmont |
| Scio Post Office | Scio Post Office | Harrison | Unknown | |
| Short Creek Post Office | Short Creek Post Office | Harrison | Unknown | |
| New Stark Post Office (historical) | New Stark Post Office (historical) | Hancock | 932 | Dunkirk |
| Colton Post Office | Colton Post Office | Henry | 669 | Colton |
| Deshler Post Office | Deshler Post Office | Henry | 709 | Deshler |
| Grelton Post Office | Grelton Post Office | Henry | 682 | McClure |
| Hamler Post Office | Hamler Post Office | Henry | 709 | Hamler |
| Holgate Post Office | Holgate Post Office | Henry | 709 | New Bavaria |
| Malinta Post Office | Malinta Post Office | Henry | 682 | Malinta |
| McLure Post Office | McLure Post Office | Henry | 673 | McClure |
| New Bavaria Post Office | New Bavaria Post Office | Henry | 735 | New Bavaria |
| Okolona Post Office | Okolona Post Office | Henry | 699 | Florida |
| Ridgeville Corners Post Office | Ridgeville Corners Post Office | Henry | 735 | Ridgeville Corners |
| Liberty Center Post Office | Liberty Center Post Office | Henry | 676 | Napoleon East |
| Alma Post Office (historical) | Alma Post Office (historical) | Henry | Unknown | |
| Beaver Creek Post Office (historical) | Beaver Creek Post Office (historical) | Henry | Unknown | |
| Damascus Post Office (historical) | Damascus Post Office (historical) | Henry | 659 | Napoleon East |
| Durand Post Office (historical) | Durand Post Office (historical) | Henry | Unknown | |
| Elery Post Office (historical) | Elery Post Office (historical) | Henry | 689 | Malinta |
| Florida Post Office (historical) | Florida Post Office (historical) | Henry | 669 | Florida |
| Freedom Mills Post Office (historical) | Freedom Mills Post Office (historical) | Henry | Unknown | |
| Gallup Post Office (historical) | Gallup Post Office (historical) | Henry | 728 | Hamler |
| Gerald Post Office (historical) | Gerald Post Office (historical) | Henry | 705 | Napoleon West |
| Le Sueur Post Office (historical) | Le Sueur Post Office (historical) | Henry | Unknown | |
| Naomi Post Office (historical) | Naomi Post Office (historical) | Henry | 715 | Napoleon West |
| Odessa Post Office (historical) | Odessa Post Office (historical) | Henry | Unknown | |
| Peters Corner Post Office (historical) | Peters Corner Post Office (historical) | Henry | Unknown | |
| Pleasantbend Post Office (historical) | Pleasantbend Post Office (historical) | Henry | 741 | New Bavaria |
| Ridge Post Office (historical) | Ridge Post Office (historical) | Henry | Unknown | |
| Ridgeland Post Office (historical) | Ridgeland Post Office (historical) | Henry | Unknown | |
| Shunk Post Office (historical) | Shunk Post Office (historical) | Henry | 676 | Malinta |
| Stanley Post Office (historical) | Stanley Post Office (historical) | Henry | Unknown | |
| Texas Post Office (historical) | Texas Post Office (historical) | Henry | 663 | Colton |
| Tubbsville Post Office (historical) | Tubbsville Post Office (historical) | Henry | Unknown | |
| Turkey Foot Post Office (historical) | Turkey Foot Post Office (historical) | Henry | Unknown | |
| Westhope Post Office (historical) | Westhope Post Office (historical) | Henry | 692 | McClure |
| Willford Post Office (historical) | Willford Post Office (historical) | Henry | Unknown | |
| Allensburgh Post Office (historical) | Allensburgh Post Office (historical) | Highland | 1033 | Lynchburg |
| Barretts Mills Post Office (historical) | Barretts Mills Post Office (historical) | Highland | 823 | Rainsboro |
| Samantha Post Office (historical) | Samantha Post Office (historical) | Highland | 1129 | Leesburg |
| Belfast Post Office (historical) | Belfast Post Office (historical) | Highland | 840 | Belfast |
| Berrysville Post Office (historical) | Berrysville Post Office (historical) | Highland | 1073 | Hillsboro |
| Bridges Post Office (historical) | Bridges Post Office (historical) | Highland | 883 | Leesburg |
| Buckley Post Office (historical) | Buckley Post Office (historical) | Highland | Unknown | |
| Careytown Post Office (historical) | Careytown Post Office (historical) | Highland | 1155 | New Vienna |
| Carmel Post Office (historical) | Carmel Post Office (historical) | Highland | 961 | Rainsboro |
| Centerfield Post Office (historical) | Centerfield Post Office (historical) | Highland | Unknown | |
| Chaney Post Office (historical) | Chaney Post Office (historical) | Highland | Unknown | |
| Taylorsville Post Office (historical) | Taylorsville Post Office (historical) | Highland | 1001 | Sugar Tree Ridge |
| Dallas Post Office (historical) | Dallas Post Office (historical) | Highland | Unknown | |
| Dodsonville Post Office (historical) | Dodsonville Post Office (historical) | Highland | 1001 | Lynchburg |
| Economy Post Office (historical) | Economy Post Office (historical) | Highland | Unknown | |
| Elville Post Office (historical) | Elville Post Office (historical) | Highland | 794 | Sinking Spring |
| Fairfax Post Office (historical) | Fairfax Post Office (historical) | Highland | 1109 | Belfast |
| Folsom Post Office (historical) | Folsom Post Office (historical) | Highland | 1076 | Belfast |
| Fort Hill Post Office (historical) | Fort Hill Post Office (historical) | Highland | Unknown | |
| Gall Post Office (historical) | Gall Post Office (historical) | Highland | 781 | Sinking Spring |
| Gath Post Office (historical) | Gath Post Office (historical) | Highland | 978 | Sardinia |
| Harriet Post Office (historical) | Harriet Post Office (historical) | Highland | 988 | Sinking Spring |
| Harwood Post Office (historical) | Harwood Post Office (historical) | Highland | 971 | Sardinia |
| Hollowtown Post Office (historical) | Hollowtown Post Office (historical) | Highland | 1030 | Sardinia |
| Home Post Office (historical) | Home Post Office (historical) | Highland | Unknown | |
| Honolulu Post Office (historical) | Honolulu Post Office (historical) | Highland | 1001 | Lynchburg |
| Leesburg post office | Leesburg post office | Highland | 1017 | Leesburg |
| Lynchburg Post Office | Lynchburg Post Office | Highland | 1007 | Lynchburg |
| Mowrystown Post Office | Mowrystown Post Office | Highland | 997 | Sugar Tree Ridge |
| Buford Post Office | Buford Post Office | Highland | 945 | Sardinia |
| East Monroe Post Office | East Monroe Post Office | Highland | 958 | Greenfield |
| Highland Post Office | Highland Post Office | Highland | 1066 | Leesburg |
| Sinking Spring Post Office | Sinking Spring Post Office | Highland | 860 | Sinking Spring |
| Sugar Tree Ridge Post Office | Sugar Tree Ridge Post Office | Highland | 1102 | Sugar Tree Ridge |
| Littlejohn Post Office (historical) | Littlejohn Post Office (historical) | Highland | Unknown | |
| Lodore Post Office (historical) | Lodore Post Office (historical) | Highland | Unknown | |
| Ludwick Post Office (historical) | Ludwick Post Office (historical) | Highland | Unknown | |
| Marshall Post Office (historical) | Marshall Post Office (historical) | Highland | 1033 | Rainsboro |
| Needful Post Office (historical) | Needful Post Office (historical) | Highland | 961 | Sardinia |
| Nevin Post Office (historical) | Nevin Post Office (historical) | Highland | Unknown | |
| Newmarket Post Office (historical) | Newmarket Post Office (historical) | Highland | 1115 | New Market |
| New Petersburg Post Office (historical) | New Petersburg Post Office (historical) | Highland | 971 | Greenfield |
| North Uniontown Post Office (historical) | North Uniontown Post Office (historical) | Highland | 997 | Sinking Spring |
| Overman Post Office (historical) | Overman Post Office (historical) | Highland | Unknown | |
| Paint Post Office (historical) | Paint Post Office (historical) | Highland | Unknown | |
| Pleasant View Post Office (historical) | Pleasant View Post Office (historical) | Highland | Unknown | |
| Apple Post Office (historical) | Apple Post Office (historical) | Hocking | 1142 | Laurelville |
| Ash Cave Post Office (historical) | Ash Cave Post Office (historical) | Hocking | Unknown | |
| Blatchford Post Office (historical) | Blatchford Post Office (historical) | Hocking | 804 | New Straitsville |
| Brenholts Post Office (historical) | Brenholts Post Office (historical) | Hocking | Unknown | |
| Cedar Grove Post Office (historical) | Cedar Grove Post Office (historical) | Hocking | 922 | South Bloomingville |
| Coalgate Post Office (historical) | Coalgate Post Office (historical) | Hocking | 741 | New Straitsville |
| Ewing Post Office (historical) | Ewing Post Office (historical) | Hocking | 830 | New Plymouth |
| Gay Post Office (historical) | Gay Post Office (historical) | Hocking | Unknown | |
| Gore Post Office (historical) | Gore Post Office (historical) | Hocking | 764 | Gore |
| Greendale Post Office (historical) | Greendale Post Office (historical) | Hocking | 702 | Gore |
| Haynes Post Office (historical) | Haynes Post Office (historical) | Hocking | 692 | Laurelville |
| Jobs Post Office (historical) | Jobs Post Office (historical) | Hocking | 722 | New Straitsville |
| Joe Post Office (historical) | Joe Post Office (historical) | Hocking | 768 | Bremen |
| Kachelmacher Post Office (historical) | Kachelmacher Post Office (historical) | Hocking | 709 | Gore |
| Kittaning Post Office (historical) | Kittaning Post Office (historical) | Hocking | Unknown | |
| Longstreth Post Office (historical) | Longstreth Post Office (historical) | Hocking | 741 | Nelsonville |
| Max Post Office (historical) | Max Post Office (historical) | Hocking | 1027 | Bremen |
| Middle Fork Post Office (historical) | Middle Fork Post Office (historical) | Hocking | Unknown | |
| Nancy Post Office (historical) | Nancy Post Office (historical) | Hocking | 801 | Laurelville |
| Needmore Post Office (historical) | Needmore Post Office (historical) | Hocking | Unknown | |
| Orbiston Post Office (historical) | Orbiston Post Office (historical) | Hocking | 705 | Nelsonville |
| Outhwaite Post Office (historical) | Outhwaite Post Office (historical) | Hocking | Unknown | |
| Pineville Post Office (historical) | Pineville Post Office (historical) | Hocking | Unknown | |
| Pursell Post Office (historical) | Pursell Post Office (historical) | Hocking | 722 | South Bloomingville |
| Rockhouse Post Office (historical) | Rockhouse Post Office (historical) | Hocking | 1089 | South Bloomingville |
| Sandrun Post Office (historical) | Sandrun Post Office (historical) | Hocking | 738 | New Straitsville |
| Smock Post Office (historical) | Smock Post Office (historical) | Hocking | 1043 | New Plymouth |
| South Perry Post Office (historical) | South Perry Post Office (historical) | Hocking | 804 | Laurelville |
| Star Post Office (historical) | Star Post Office (historical) | Hocking | Unknown | |
| Starr Post Office (historical) | Starr Post Office (historical) | Hocking | 768 | Union Furnace |
| Swan Post Office (historical) | Swan Post Office (historical) | Hocking | Unknown | |
| Swartz Post Office (historical) | Swartz Post Office (historical) | Hocking | Unknown | |
| Webb Summit Post Office (historical) | Webb Summit Post Office (historical) | Hocking | 794 | Gore |
| Winona Post Office (historical) | Winona Post Office (historical) | Hocking | 741 | Gore |
| Carbon Hill Post Office | Carbon Hill Post Office | Hocking | 699 | New Straitsville |
| Haydenville Post Office | Haydenville Post Office | Hocking | 705 | Union Furnace |
| Laurelville Post Office | Laurelville Post Office | Hocking | 741 | Laurelville |
| Rockbridge Post Office | Rockbridge Post Office | Hocking | 755 | Rockbridge |
| Union Furnace Post Office | Union Furnace Post Office | Hocking | 748 | Union Furnace |
| Murray City Post Office (historical) | Murray City Post Office (historical) | Hocking | 709 | New Straitsville |
| South Bloomingville Post Office | South Bloomingville Post Office | Hocking | 709 | South Bloomingville |
| Isleboro Post Office (historical) | Isleboro Post Office (historical) | Hocking | 1053 | New Plymouth |
| Monday Post Office (historical) | Monday Post Office (historical) | Hocking | 705 | Nelsonville |
| Gibisonville Post Office (historical) | Gibisonville Post Office (historical) | Hocking | 1112 | South Bloomingville |
| Blackjack Post Office (historical) | Blackjack Post Office (historical) | Hocking | 869 | New Plymouth |
| Consol Post Office (historical) | Consol Post Office (historical) | Hocking | 791 | New Straitsville |
| Enterprise Post Office (historical) | Enterprise Post Office (historical) | Hocking | 755 | Logan |
| Alfonia Post Office (historical) | Alfonia Post Office (historical) | Huron | Unknown | |
| Bismark Post Office (historical) | Bismark Post Office (historical) | Huron | 814 | Flat Rock |
| Boughtonville Post Office (historical) | Boughtonville Post Office (historical) | Huron | 984 | Greenwich |
| Bronson Post Office (historical) | Bronson Post Office (historical) | Huron | Unknown | |
| Carson Post Office (historical) | Carson Post Office (historical) | Huron | Unknown | |
| Centre Peru Post Office (historical) | Centre Peru Post Office (historical) | Huron | Unknown | |
| Clarksfield Post Office (historical) | Clarksfield Post Office (historical) | Huron | 889 | Clarksfield |
| East Clarksfield Post Office (historical) | East Clarksfield Post Office (historical) | Huron | Unknown | |
| East Norwalk Post Office (historical) | East Norwalk Post Office (historical) | Huron | 732 | Milan |
| East Townsend Post Office (historical) | East Townsend Post Office (historical) | Huron | 896 | Clarksfield |
| Eldridge Post Office (historical) | Eldridge Post Office (historical) | Huron | Unknown | |
| Fitchville Post Office (historical) | Fitchville Post Office (historical) | Huron | 988 | New London |
| Greenwich Post Office (historical) | Greenwich Post Office (historical) | Huron | Unknown | |
| Groton Post Office (historical) | Groton Post Office (historical) | Huron | Unknown | |
| Hartland Post Office (historical) | Hartland Post Office (historical) | Huron | 942 | Clarksfield |
| Havana Post Office (historical) | Havana Post Office (historical) | Huron | 830 | Flat Rock |
| Ives Post Office (historical) | Ives Post Office (historical) | Huron | Unknown | |
| Lafayette Post Office (historical) | Lafayette Post Office (historical) | Huron | Unknown | |
| Lyme Post Office (historical) | Lyme Post Office (historical) | Huron | Unknown | |
| Morehead Post Office (historical) | Morehead Post Office (historical) | Huron | Unknown | |
| North Norwich Post Office (historical) | North Norwich Post Office (historical) | Huron | Unknown | |
| Peru Office (historical) | Peru Office (historical) | Huron | 768 | Monroeville |
| Pontiac Post Office (historical) | Pontiac Post Office (historical) | Huron | 764 | Monroeville |
| Ripleyville Post Office (historical) | Ripleyville Post Office (historical) | Huron | Unknown | |
| Sherman Post Office (historical) | Sherman Post Office (historical) | Huron | Unknown | |
| Steuben Post Office (historical) | Steuben Post Office (historical) | Huron | 846 | Willard |
| Weavers Corners Post Office (historical) | Weavers Corners Post Office (historical) | Huron | 817 | Flat Rock |
| West Clarksfield Post Office (historical) | West Clarksfield Post Office (historical) | Huron | 906 | Clarksfield |
| Whitefox Post Office (historical) | Whitefox Post Office (historical) | Huron | 909 | Brighton |
| Woodford Post Office (historical) | Woodford Post Office (historical) | Huron | Unknown | |
| Collins Post Office | Collins Post Office | Huron | 869 | Berlin Heights |
| Greenwich Post Office | Greenwich Post Office | Huron | Unknown | |
| Monroeville Post Office | Monroeville Post Office | Huron | 705 | Monroeville |
| New Haven Post Office | New Haven Post Office | Huron | 935 | Willard |
| New London Post Office | New London Post Office | Huron | 981 | New London |
| North Fairfield Post Office | North Fairfield Post Office | Huron | 932 | Greenwich |
| Wakeman Post Office | Wakeman Post Office | Huron | 738 | Kimball |
| Centerton Post Office (historical) | Centerton Post Office (historical) | Huron | 889 | Centerton |
| North Monroeville Post Office (historical) | North Monroeville Post Office (historical) | Huron | 725 | Kimball |
| Olena Post Office (historical) | Olena Post Office (historical) | Huron | 951 | Norwalk |
| Pricetown Post Office (historical) | Pricetown Post Office (historical) | Highland | 1010 | Lynchburg |
| Rainsboro Post Office | Rainsboro Post Office | Highland | 958 | Rainsboro |
| Reimensnyders Post Office (historical) | Reimensnyders Post Office (historical) | Highland | Unknown | |
| Ridings Post Office (historical) | Ridings Post Office (historical) | Highland | Unknown | |
| Russell Post Office (historical) | Russell Post Office (historical) | Highland | 1037 | New Market |
| Shakeltown Post Office (historical) | Shakeltown Post Office (historical) | Highland | 1083 | New Market |
| Sharpsville Post Office (historical) | Sharpsville Post Office (historical) | Highland | 1040 | New Vienna |
| Sicily Post Office (historical) | Sicily Post Office (historical) | Highland | 951 | Sardinia |
| Sorg Post Office (historical) | Sorg Post Office (historical) | Highland | 1027 | Sugar Tree Ridge |
| Turkey Post Office (historical) | Turkey Post Office (historical) | Highland | 935 | Sinking Spring |
| Willettville Post Office (historical) | Willettville Post Office (historical) | Highland | 1119 | New Vienna |
| Winkle Post Office (historical) | Winkle Post Office (historical) | Highland | 1043 | Sugar Tree Ridge |
| Florida Post Office (historical) | Florida Post Office (historical) | Highland | Unknown | |
| Big Prairie Post Office | Big Prairie Post Office | Holmes | 942 | Shreve |
| Nashville Post Office | Nashville Post Office | Holmes | 1237 | Glenmont |
| Killbuck Post Office | Killbuck Post Office | Holmes | 814 | Killbuck |
| Glenmont Post Office | Glenmont Post Office | Holmes | 873 | Glenmont |
| Mount Hope Post Office | Mount Hope Post Office | Holmes | 1260 | Berlin |
| Millersburg Post Office | Millersburg Post Office | Holmes | 896 | Millersburg |
| Lakeville Post Office | Lakeville Post Office | Holmes | 928 | Loudonville |
| Walnut Creek Post Office | Walnut Creek Post Office | Holmes | 1184 | Sugarcreek |
| Winesburg Post Office | Winesburg Post Office | Holmes | 1283 | Sugarcreek |
| Benton Post Office | Benton Post Office | Holmes | 984 | Berlin |
| Berlin Post Office | Berlin Post Office | Holmes | 1293 | Berlin |
| Charm Post Office | Charm Post Office | Holmes | 1060 | Berlin |
| Holmesville Post Office | Holmesville Post Office | Holmes | 840 | Holmesville |
| Baddow Pass Post Office (historical) | Baddow Pass Post Office (historical) | Holmes | 1129 | Brinkhaven |
| Beck Mills Post Office (historical) | Beck Mills Post Office (historical) | Holmes | 915 | New Bedford |
| De Witts Ridge Post Office (historical) | De Witts Ridge Post Office (historical) | Holmes | Unknown | |
| Dino Post Office (historical) | Dino Post Office (historical) | Holmes | Unknown | |
| Doughty Post Office (historical) | Doughty Post Office (historical) | Holmes | Unknown | |
| Farmerstown Post Office (historical) | Farmerstown Post Office (historical) | Holmes | 1115 | Baltic |
| Grade Post Office (historical) | Grade Post Office (historical) | Holmes | 1161 | Millersburg |
| Hard Post Office (historical) | Hard Post Office (historical) | Holmes | 833 | Holmesville |
| Humphreys Villa Post Office (historical) | Humphreys Villa Post Office (historical) | Holmes | Unknown | |
| Humphreyville Post Office (historical) | Humphreyville Post Office (historical) | Holmes | Unknown | |
| Jones Post Office (historical) | Jones Post Office (historical) | Holmes | Unknown | |
| Morgan Settlement Post Office (historical) | Morgan Settlement Post Office (historical) | Holmes | Unknown | |
| Paint Valley Post Office (historical) | Paint Valley Post Office (historical) | Holmes | 961 | Glenmont |
| Prairie Post Office (historical) | Prairie Post Office (historical) | Holmes | Unknown | |
| Salt Creek Post Office (historical) | Salt Creek Post Office (historical) | Holmes | Unknown | |
| Saltillo Post Office (historical) | Saltillo Post Office (historical) | Holmes | 1224 | Berlin |
| Special Post Office (historical) | Special Post Office (historical) | Holmes | Unknown | |
| Stilwell Post Office (historical) | Stilwell Post Office (historical) | Holmes | 886 | Spring Mountain |
| Trail Post Office (historical) | Trail Post Office (historical) | Holmes | 1007 | Sugarcreek |
| Tuttleville Post Office (historical) | Tuttleville Post Office (historical) | Holmes | Unknown | |
| Wards Post Office (historical) | Wards Post Office (historical) | Holmes | Unknown | |
| Welcome Post Office (historical) | Welcome Post Office (historical) | Holmes | 925 | Glenmont |
| Banner Post Office (historical) | Banner Post Office (historical) | Jackson | 709 | Oak Hill |
| Berlin Cross Roads Post Office (historical) | Berlin Cross Roads Post Office (historical) | Jackson | Unknown | |
| Blanche Post Office (historical) | Blanche Post Office (historical) | Jackson | Unknown | |
| Brocks Post Office (historical) | Brocks Post Office (historical) | Jackson | Unknown | |
| Buck Eye Furnace Post Office (historical) | Buck Eye Furnace Post Office (historical) | Jackson | Unknown | |
| Bud Post Office (historical) | Bud Post Office (historical) | Jackson | Unknown | |
| Camba Post Office (historical) | Camba Post Office (historical) | Jackson | 728 | Oak Hill |
| Clarence Post Office (historical) | Clarence Post Office (historical) | Jackson | Unknown | |
| Clay Post Office (historical) | Clay Post Office (historical) | Jackson | 705 | Oak Hill |
| Cove Post Office (historical) | Cove Post Office (historical) | Jackson | Unknown | |
| Crabtree Mills Post Office (historical) | Crabtree Mills Post Office (historical) | Jackson | Unknown | |
| Dawkins Mills Post Office (historical) | Dawkins Mills Post Office (historical) | Jackson | Unknown | |
| Eastburn Post Office (historical) | Eastburn Post Office (historical) | Jackson | 650 | Beaver |
| Eckny Post Office (historical) | Eckny Post Office (historical) | Jackson | Unknown | |
| Esther Post Office (historical) | Esther Post Office (historical) | Jackson | Unknown | |
| Glade Post Office (historical) | Glade Post Office (historical) | Jackson | 689 | Beaver |
| Grahamsville Post Office (historical) | Grahamsville Post Office (historical) | Jackson | 771 | Petersburg |
| Green Meadow Post Office (historical) | Green Meadow Post Office (historical) | Jackson | Unknown | |
| Hays Post Office (historical) | Hays Post Office (historical) | Jackson | Unknown | |
| Herdman Post Office (historical) | Herdman Post Office (historical) | Jackson | Unknown | |
| Hewit Post Office (historical) | Hewit Post Office (historical) | Jackson | Unknown | |
| Hillsdale Post Office (historical) | Hillsdale Post Office (historical) | Jackson | Unknown | |
| Howes Hill Post Office (historical) | Howes Hill Post Office (historical) | Jackson | Unknown | |
| Iron Valley Post Office (historical) | Iron Valley Post Office (historical) | Jackson | Unknown | |
| Ivy Post Office (historical) | Ivy Post Office (historical) | Jackson | Unknown | |
| Jackson Furnace Post Office (historical) | Jackson Furnace Post Office (historical) | Jackson | Unknown | |
| Jimes Post Office (historical) | Jimes Post Office (historical) | Jackson | Unknown | |
| Jordon Post Office (historical) | Jordon Post Office (historical) | Jackson | Unknown | |
| Kitchen Post Office (historical) | Kitchen Post Office (historical) | Jackson | 666 | Gallia |
| Leach Post Office (historical) | Leach Post Office (historical) | Jackson | Unknown | |
| Levi Post Office (historical) | Levi Post Office (historical) | Jackson | Unknown | |
| Limerick Post Office (historical) | Limerick Post Office (historical) | Jackson | 633 | Richmond Dale |
| McGhees Store Post Office (historical) | McGhees Store Post Office (historical) | Jackson | Unknown | |
| Menager Post Office (historical) | Menager Post Office (historical) | Jackson | Unknown | |
| Byer Post Office (historical) | Byer Post Office (historical) | Jackson | 633 | Byer |
| Chapman Post Office (historical) | Chapman Post Office (historical) | Jackson | 682 | Wellston |
| Cove Post Office (historical) | Cove Post Office (historical) | Jackson | Unknown | |
| Leo Post Office (historical) | Leo Post Office (historical) | Jackson | 705 | Byer |
| Glenroy Post Office (historical) | Glenroy Post Office (historical) | Jackson | 761 | Wellston |
| Keystone Post Office (historical) | Keystone Post Office (historical) | Jackson | Unknown | |
| Mabee Post Office (historical) | Mabee Post Office (historical) | Jackson | Unknown | |
| Rockyhill Post Office (historical) | Rockyhill Post Office (historical) | Jackson | 715 | Oak Hill |
| Samsonville Post Office (historical) | Samsonville Post Office (historical) | Jackson | Unknown | |
| Coalton Post Office (historical) | Coalton Post Office (historical) | Jackson | 699 | Wellston |
| Oak Hill Post Office (historical) | Oak Hill Post Office (historical) | Jackson | 705 | Oak Hill |
| Monroe Furnace Post Office (historical) | Monroe Furnace Post Office (historical) | Jackson | Unknown | |
| Mountain Ridge Post Office (historical) | Mountain Ridge Post Office (historical) | Jackson | Unknown | |
| Needy Post Office (historical) | Needy Post Office (historical) | Jackson | Unknown | |
| Orpheus Post Office (historical) | Orpheus Post Office (historical) | Jackson | 883 | Rio Grande |
| Petrea Post Office (historical) | Petrea Post Office (historical) | Jackson | 692 | Wellston |
| Poors Post Office (historical) | Poors Post Office (historical) | Jackson | Unknown | |
| Ratchford Post Office (historical) | Ratchford Post Office (historical) | Jackson | 732 | Wellston |
| Adam Post Office (historical) | Adam Post Office (historical) | Jackson | Unknown | |
| Burris Post Office (historical) | Burris Post Office (historical) | Jackson | Unknown | |
| Amsterdam Post Office | Amsterdam Post Office | Jefferson | 928 | Amsterdam |
| Broadacre Post Office (historical) | Broadacre Post Office (historical) | Jefferson | 869 | Smithfield |
| East Springfield Post Office | East Springfield Post Office | Jefferson | 1247 | Richmond |
| Empire Post Office | Empire Post Office | Jefferson | 676 | East Liverpool South |
| Annapolis Post Office (historical) | Annapolis Post Office (historical) | Jefferson | 1119 | Richmond |
| Calumet Post Office (historical) | Calumet Post Office (historical) | Jefferson | 692 | Weirton |
| Costonia Post Office (historical) | Costonia Post Office (historical) | Jefferson | 718 | Weirton |
| Fair Play Post Office (historical) | Fair Play Post Office (historical) | Jefferson | 984 | Smithfield |
| Fernwood Post Office (historical) | Fernwood Post Office (historical) | Jefferson | 774 | Steubenville West |
| Holt Post Office (historical) | Holt Post Office (historical) | Jefferson | 814 | Salineville |
| Linton Post Office (historical) | Linton Post Office (historical) | Jefferson | Unknown | |
| Pravo Post Office (historical) | Pravo Post Office (historical) | Jefferson | 837 | Salineville |
| Alikanna Post Office (historical) | Alikanna Post Office (historical) | Jefferson | 722 | Knoxville |
| Auth Post Office (historical) | Auth Post Office (historical) | Jefferson | Unknown | |
| Bowlingreen Post Office (historical) | Bowlingreen Post Office (historical) | Jefferson | Unknown | |
| Bradley Post Office (historical) | Bradley Post Office (historical) | Jefferson | Unknown | |
| Chandler Post Office (historical) | Chandler Post Office (historical) | Jefferson | 1037 | Smithfield |
| Circle Green Post Office (historical) | Circle Green Post Office (historical) | Jefferson | 1316 | Amsterdam |
| Circlegreen Post Office (historical) | Circlegreen Post Office (historical) | Jefferson | Unknown | |
| Connorville Post Office (historical) | Connorville Post Office (historical) | Jefferson | 676 | Tiltonsville |
| Copes Mills Post Office (historical) | Copes Mills Post Office (historical) | Jefferson | Unknown | |
| Cross Creek Post Office (historical) | Cross Creek Post Office (historical) | Jefferson | Unknown | |
| Croxton Post Office (historical) | Croxton Post Office (historical) | Jefferson | Unknown | |
| Dillonvale Post Office | Dillonvale Post Office | Jefferson | 732 | Dillonvale |
| Dunglen Post Office | Dunglen Post Office | Jefferson | 794 | Dillonvale |
| Eastview Post Office (historical) | Eastview Post Office (historical) | Jefferson | Unknown | |
| Emerson Post Office (historical) | Emerson Post Office (historical) | Jefferson | 1204 | Dillonvale |
| Fells Post Office (historical) | Fells Post Office (historical) | Jefferson | 823 | Steubenville West |
| Florancedale Post Office (historical) | Florancedale Post Office (historical) | Jefferson | Unknown | |
| Freeman Post Office (historical) | Freeman Post Office (historical) | Jefferson | Unknown | |
| Georges Run Post Office (historical) | Georges Run Post Office (historical) | Jefferson | 735 | Steubenville West |
| Glen Robbins Post Office (historical) | Glen Robbins Post Office (historical) | Jefferson | 787 | Tiltonsville |
| Gould Post Office (historical) | Gould Post Office (historical) | Jefferson | 686 | Steubenville West |
| Harpersville Post Office (historical) | Harpersville Post Office (historical) | Jefferson | Unknown | |
| Herrick Post Office (historical) | Herrick Post Office (historical) | Jefferson | 820 | Dillonvale |
| Hildebron Post Office (historical) | Hildebron Post Office (historical) | Jefferson | Unknown | |
| Hobbieville Post Office (historical) | Hobbieville Post Office (historical) | Jefferson | Unknown | |
| Island Creek Post Office (historical) | Island Creek Post Office (historical) | Jefferson | 823 | Knoxville |
| Knoxville Post Office (historical) | Knoxville Post Office (historical) | Jefferson | 1283 | Knoxville |
| Laurelton Post Office (historical) | Laurelton Post Office (historical) | Jefferson | Unknown | |
| Lowthers Post Office (historical) | Lowthers Post Office (historical) | Jefferson | Unknown | |
| Mount Pleasant Post Office | Mount Pleasant Post Office | Jefferson | 1234 | Dillonvale |
| Nebo Post Office (historical) | Nebo Post Office (historical) | Jefferson | Unknown | |
| New Alexandria Post Office (historical) | New Alexandria Post Office (historical) | Jefferson | 1224 | Steubenville West |
| New Somerset Post Office (historical) | New Somerset Post Office (historical) | Jefferson | 1214 | Wellsville |
| Osage Post Office (historical) | Osage Post Office (historical) | Jefferson | 1197 | Knoxville |
| Panhandle Post Office (historical) | Panhandle Post Office (historical) | Jefferson | 984 | Smithfield |
| Parlett Post Office (historical) | Parlett Post Office (historical) | Jefferson | 1178 | Smithfield |
| Pinckney Post Office (historical) | Pinckney Post Office (historical) | Jefferson | Unknown | |
| Pine Valley Post Office (historical) | Pine Valley Post Office (historical) | Jefferson | 728 | Dillonvale |
| Piney Fork Cemetery | Piney Fork Cemetery | Jefferson | 1004 | Smithfield |
| Port Homer Post Office (historical) | Port Homer Post Office (historical) | Jefferson | 715 | Wellsville |
| Ramsey Post Office (historical) | Ramsey Post Office (historical) | Jefferson | 1027 | Dillonvale |
| Reeds Mills Post Office (historical) | Reeds Mills Post Office (historical) | Jefferson | 883 | Steubenville West |
| Rhodesdale Post Office (historical) | Rhodesdale Post Office (historical) | Jefferson | Unknown | |
| Richmond Post Office | Richmond Post Office | Jefferson | 1240 | Richmond |
| Robertsl Post Office (historical) | Robertsl Post Office (historical) | Jefferson | Unknown | |
| Ruthven Post Office (historical) | Ruthven Post Office (historical) | Jefferson | Unknown | |
| Shane Post Office (historical) | Shane Post Office (historical) | Jefferson | 1260 | Richmond |
| Steubenville Post Office | Steubenville Post Office | Jefferson | 1247 | Smithfield |
| Startle Post Office (historical) | Startle Post Office (historical) | Jefferson | 820 | Dillonvale |
| Stratton Post Office | Stratton Post Office | Jefferson | 646 | Wellsville |
| Taggerts Post Office (historical) | Taggerts Post Office (historical) | Jefferson | Unknown | |
| Thompson Salt Works Post Office (historical) | Thompson Salt Works Post Office (historical) | Jefferson | Unknown | |
| Tunnel Hill Post Office (historical) | Tunnel Hill Post Office (historical) | Jefferson | Unknown | |
| Tyler Post Office (historical) | Tyler Post Office (historical) | Jefferson | Unknown | |
| Unionport post office | Unionport post office | Jefferson | 974 | Smithfield |
| Updegraffs Post Office (historical) | Updegraffs Post Office (historical) | Jefferson | Unknown | |
| Updegraff Post Office (historical) | Updegraff Post Office (historical) | Jefferson | Unknown | |
| Verbena Post Office (historical) | Verbena Post Office (historical) | Jefferson | Unknown | |
| Warrenton Post Office (historical) | Warrenton Post Office (historical) | Jefferson | 653 | Tiltonsville |
| Weems Post Office (historical) | Weems Post Office (historical) | Jefferson | 971 | Smithfield |
| Wiintersville Post Office (historical) | Wiintersville Post Office (historical) | Jefferson | 1230 | Knoxville |
| Wolf Run Post Office | Wolf Run Post Office | Jefferson | 1004 | Amsterdam |
| Yorkville Post Office | Yorkville Post Office | Jefferson | 673 | Tiltonsville |
| Academia Post office (historical) | Academia Post office (historical) | Knox | 1056 | Mount Vernon |
| Ball Post Office (historical) | Ball Post Office (historical) | Knox | Unknown | |
| Bangs Post Office (historical) | Bangs Post Office (historical) | Knox | 1112 | Homer |
| Batemantown Post Office (historical) | Batemantown Post Office (historical) | Knox | 1152 | Bellville |
| Circle Post Office (historical) | Circle Post Office (historical) | Knox | Unknown | |
| Clarks Cross Roads Post Office (historical) | Clarks Cross Roads Post Office (historical) | Knox | Unknown | |
| Darlings Post Office (historical) | Darlings Post Office (historical) | Knox | Unknown | |
| Delano Post Office (historical) | Delano Post Office (historical) | Knox | Unknown | |
| Democracy Post Office (historical) | Democracy Post Office (historical) | Knox | Unknown | |
| Esto Post Office (historical) | Esto Post Office (historical) | Knox | 1181 | Walhonding |
| Eugene Post Office (historical) | Eugene Post Office (historical) | Knox | Unknown | |
| Harters Cross Roads Post Office (historical) | Harters Cross Roads Post Office (historical) | Knox | Unknown | |
| Jelloway Post Office (historical) | Jelloway Post Office (historical) | Knox | 1040 | Jelloway |
| Knox Post Office (historical) | Knox Post Office (historical) | Knox | 1037 | Fredericktown |
| Lucernville Post Office (historical) | Lucernville Post Office (historical) | Knox | Unknown | |
| Maple Grove Post Office (historical) | Maple Grove Post Office (historical) | Knox | Unknown | |
| Milfordton Post Office (historical) | Milfordton Post Office (historical) | Knox | 1207 | Homer |
| Millwood Post Office (historical) | Millwood Post Office (historical) | Knox | 932 | Danville |
| Monroe Mills Post Office (historical) | Monroe Mills Post Office (historical) | Knox | 948 | Danville |
| Motpelier Post Office (historical) | Motpelier Post Office (historical) | Knox | Unknown | |
| Nunda Post Office (historical) | Nunda Post Office (historical) | Knox | 1276 | Jelloway |
| Peiffers Cross Roads Post Office (historical) | Peiffers Cross Roads Post Office (historical) | Knox | Unknown | |
| Phyfers Cross Roads Post Office (historical) | Phyfers Cross Roads Post Office (historical) | Knox | Unknown | |
| Pipesville Post Office (historical) | Pipesville Post Office (historical) | Knox | 1066 | Martinsburg |
| Rolla Post Office (historical) | Rolla Post Office (historical) | Knox | Unknown | |
| Sandusky Cross Roads Post Office (historical) | Sandusky Cross Roads Post Office (historical) | Knox | Unknown | |
| Wolf Post Office (historical) | Wolf Post Office (historical) | Knox | Unknown | |
| Zuck Post Office (historical) | Zuck Post Office (historical) | Knox | 879 | Brinkhaven |
| Bladensburg Post Office | Bladensburg Post Office | Knox | 978 | Martinsburg |
| Brinkhaven Post Office | Brinkhaven Post Office | Knox | 879 | Brinkhaven |
| Centerburg Post Office | Centerburg Post Office | Knox | 1227 | Centerburg |
| Danville Post Office | Danville Post Office | Knox | 988 | Danville |
| Irondale Post Office | Irondale Post Office | Jefferson | 705 | Wellsville |
| Howard Post Office | Howard Post Office | Knox | 899 | Danville |
| Martinsburg Post Office | Martinsburg Post Office | Knox | 1175 | Martinsburg |
| Mount Liberty Post Office | Mount Liberty Post Office | Knox | 1217 | Centerburg |
| Fredericktown Post Office | Fredericktown Post Office | Knox | 1132 | Fredericktown |
| Rush Run Post Office (historical) | Rush Run Post Office (historical) | Jefferson | 705 | Tiltonsville |
| Ankenytown Post Office (historical) | Ankenytown Post Office (historical) | Knox | 1152 | Bellville |
| Mount Olive Post Office (historical) | Mount Olive Post Office (historical) | Knox | Unknown | |
| Brandon Post Office (historical) | Brandon Post Office (historical) | Knox | 1076 | Homer |
| Buckeye City Post Office (historical) | Buckeye City Post Office (historical) | Knox | 974 | Danville |
| Rich Hill Post Office (historical) | Rich Hill Post Office (historical) | Knox | 1230 | Centerburg |
| Greer Post Office (historical) | Greer Post Office (historical) | Knox | 919 | Greer |
| Hunt Post Office (historical) | Hunt Post Office (historical) | Knox | 1040 | Hunt |
| Levering Post Office (historical) | Levering Post Office (historical) | Knox | Unknown | |
| Lock Post Office (historical) | Lock Post Office (historical) | Knox | 1132 | Homer |
| Lucerne Post Office (historical) | Lucerne Post Office (historical) | Knox | 1089 | Chesterville |
| Morgan Center Post Office (historical) | Morgan Center Post Office (historical) | Knox | 1109 | Hunt |
| North Liberty Post Office (historical) | North Liberty Post Office (historical) | Knox | 1299 | Butler |
| Breakman Post Office (historical) | Breakman Post Office (historical) | Lake | 1129 | Thompson |
| Chagrin Harbor Rural Station Post Office (historical) | Chagrin Harbor Rural Station Post Office (historical) | Lake | 581 | Eastlake |
| Concord Post Office (historical) | Concord Post Office (historical) | Lake | 873 | Painesville |
| Driggs Post Office (historical) | Driggs Post Office (historical) | Lake | Unknown | |
| Ellinsburgh Post Office (historical) | Ellinsburgh Post Office (historical) | Lake | Unknown | |
| Erieside Post Office (historical) | Erieside Post Office (historical) | Lake | 620 | Eastlake |
| Fairport Post Office (historical) | Fairport Post Office (historical) | Lake | Unknown | |
| Grand River Post Office | Grand River Post Office | Lake | 610 | Mentor |
| Hampshire Post Office (historical) | Hampshire Post Office (historical) | Lake | Unknown | |
| Hillhouse Post Office (historical) | Hillhouse Post Office (historical) | Lake | Unknown | |
| Lane Post Office (historical) | Lane Post Office (historical) | Lake | 689 | Perry |
| Little Mountain Post Office (historical) | Little Mountain Post Office (historical) | Lake | 1076 | Mentor |
| Madison Post Office | Madison Post Office | Lake | 735 | Madison |
| Madison Golf Lakelands Rural Branch Post Office (historical) | Madison Golf Lakelands Rural Branch Post Office (historical) | Lake | Unknown | |
| Mascot Post Office (historical) | Mascot Post Office (historical) | Lake | Unknown | |
| North Madison Post Office (historical) | North Madison Post Office (historical) | Lake | 669 | Madison |
| North Perry Post Office (historical) | North Perry Post Office (historical) | Lake | 679 | Perry |
| Perry Post Office | Perry Post Office | Lake | 699 | Perry |
| Richmond Post Office (historical) | Richmond Post Office (historical) | Lake | Unknown | |
| Salida Post Office (historical) | Salida Post Office (historical) | Lake | 623 | Mentor |
| South Kirtland Post Office (historical) | South Kirtland Post Office (historical) | Lake | Unknown | |
| South Willoughby Post Office (historical) | South Willoughby Post Office (historical) | Lake | Unknown | |
| Temple Post Office (historical) | Temple Post Office (historical) | Lake | Unknown | |
| West Mentor Post Office (historical) | West Mentor Post Office (historical) | Lake | 702 | Mentor |
| Wheeler Post Office (historical) | Wheeler Post Office (historical) | Lake | 830 | Thompson |
| Wickliffe Post Office | Wickliffe Post Office | Lake | 761 | Mayfield Heights |
| Willobee Rural Branch Post Office (historical) | Willobee Rural Branch Post Office (historical) | Lake | Unknown | |
| Willoughby Post Office | Willoughby Post Office | Lake | 656 | Eastlake |
| Arcole Post Office (historical) | Arcole Post Office (historical) | Lake | Unknown | |
| Crockettsville Post Office (historical) | Crockettsville Post Office (historical) | Highland | Unknown | |
| Hocking Furnace Post Office (historical) | Hocking Furnace Post Office (historical) | Hocking | Unknown | |
| Mingo Mills Post Office (historical) | Mingo Mills Post Office (historical) | Jefferson | Unknown | |
| Aid Post Office (historical) | Aid Post Office (historical) | Lawrence | 581 | Aid |
| Andis Post Office (historical) | Andis Post Office (historical) | Lawrence | 705 | Kitts Hill |
| Arabia Post Office (historical) | Arabia Post Office (historical) | Lawrence | 610 | Waterloo |
| Beulah Post Office (historical) | Beulah Post Office (historical) | Lawrence | Unknown | |
| Bomer Post Office (historical) | Bomer Post Office (historical) | Lawrence | Unknown | |
| Bosterville Post Office (historical) | Bosterville Post Office (historical) | Lawrence | Unknown | |
| Buckhorn Post Office (historical) | Buckhorn Post Office (historical) | Lawrence | 656 | Pedro |
| Burlington Post Office (historical) | Burlington Post Office (historical) | Lawrence | 561 | Catlettsburg |
| Campbell Post Office (historical) | Campbell Post Office (historical) | Lawrence | Unknown | |
| Cebee Post Office (historical) | Cebee Post Office (historical) | Lawrence | 594 | Aid |
| Center Furnace Post Office (historical) | Center Furnace Post Office (historical) | Lawrence | Unknown | |
| Cherryville Post Office (historical) | Cherryville Post Office (historical) | Lawrence | 620 | Kitts Hill |
| Clarks Mills Post Office (historical) | Clarks Mills Post Office (historical) | Lawrence | Unknown | |
| Culbertson Post Office (historical) | Culbertson Post Office (historical) | Lawrence | Unknown | |
| Dearing Post Office (historical) | Dearing Post Office (historical) | Lawrence | 728 | Kitts Hill |
| Dement Post Office (historical) | Dement Post Office (historical) | Lawrence | Unknown | |
| Dickerson Forge Post Office (historical) | Dickerson Forge Post Office (historical) | Lawrence | Unknown | |
| Dilley Post Office (historical) | Dilley Post Office (historical) | Lawrence | Unknown | |
| Dobbston Post Office (historical) | Dobbston Post Office (historical) | Lawrence | 886 | Aid |
| Blackfork Post Office | Blackfork Post Office | Lawrence | 761 | Gallia |
| Athalia Rural Branch Post Office (historical) | Athalia Rural Branch Post Office (historical) | Lawrence | 558 | Athalia |
| Windsor Cross Roads Post Office (historical) | Windsor Cross Roads Post Office (historical) | Lawrence | Unknown | |
| Bradrick Post Office (historical) | Bradrick Post Office (historical) | Lawrence | 663 | Huntington |
| Coalgrove Post Office (historical) | Coalgrove Post Office (historical) | Lawrence | 574 | Ironton |
| Chesapeake Post Office | Chesapeake Post Office | Lawrence | 561 | Huntington |
| Elizabeth Post Office (historical) | Elizabeth Post Office (historical) | Lawrence | Unknown | |
| Ensee Post Office (historical) | Ensee Post Office (historical) | Lawrence | Unknown | |
| Essex Post Office (historical) | Essex Post Office (historical) | Lawrence | 617 | Catlettsburg |
| Firebrick Post Office (historical) | Firebrick Post Office (historical) | Lawrence | 669 | South Webster |
| Gray Post Office (historical) | Gray Post Office (historical) | Lawrence | Unknown | |
| Handley Post Office (historical) | Handley Post Office (historical) | Lawrence | Unknown | |
| Hecla Post Office (historical) | Hecla Post Office (historical) | Lawrence | 607 | Ironton |
| Howell Post Office (historical) | Howell Post Office (historical) | Lawrence | 561 | Catlettsburg |
| Ice Creek Post Office (historical) | Ice Creek Post Office (historical) | Lawrence | Unknown | |
| Ida Post Office (historical) | Ida Post Office (historical) | Lawrence | 938 | Aid |
| Israel Post Office (historical) | Israel Post Office (historical) | Lawrence | Unknown | |
| Jep Post Office (historical) | Jep Post Office (historical) | Lawrence | Unknown | |
| Johns Creek Post Office (historical) | Johns Creek Post Office (historical) | Lawrence | 663 | Sherritts |
| Kelleys Mills Post Office (historical) | Kelleys Mills Post Office (historical) | Lawrence | Unknown | |
| King Post Office (historical) | King Post Office (historical) | Lawrence | Unknown | |
| Hanging Rock Post Office | Hanging Rock Post Office | Lawrence | 545 | Ironton |
| Forestdale Post Office (historical) | Forestdale Post Office (historical) | Lawrence | 705 | Kitts Hill |
| Greasyridge Post Office (historical) | Greasyridge Post Office (historical) | Lawrence | 922 | Waterloo |
| Laird Post Office (historical) | Laird Post Office (historical) | Lawrence | Unknown | |
| Lecta Post Office (historical) | Lecta Post Office (historical) | Lawrence | 696 | Waterloo |
| Long Creek Post Office (historical) | Long Creek Post Office (historical) | Lawrence | Unknown | |
| Manhattan Post Office (historical) | Manhattan Post Office (historical) | Lawrence | Unknown | |
| Montreal Post Office (historical) | Montreal Post Office (historical) | Lawrence | 696 | Catlettsburg |
| Okey Post Office (historical) | Okey Post Office (historical) | Lawrence | 761 | Mercerville |
| Olive Furnace Post Office (historical) | Olive Furnace Post Office (historical) | Lawrence | 666 | South Webster |
| Oriole Post Office (historical) | Oriole Post Office (historical) | Lawrence | Unknown | |
| Ort Post Office (historical) | Ort Post Office (historical) | Lawrence | Unknown | |
| Platform Post Office (historical) | Platform Post Office (historical) | Lawrence | 607 | Athalia |
| Polkadotte Post Office (historical) | Polkadotte Post Office (historical) | Lawrence | 620 | Athalia |
| Pedro Post Office | Pedro Post Office | Lawrence | 610 | Pedro |
| Rock Camp Post Office | Rock Camp Post Office | Lawrence | 614 | Kitts Hill |
| Scott Town Post Office (historical) | Scott Town Post Office (historical) | Lawrence | Unknown | |
| Sherritts Post Office (historical) | Sherritts Post Office (historical) | Lawrence | 623 | Sherritts |
| Simmons Post Office (historical) | Simmons Post Office (historical) | Lawrence | Unknown | |
| South Point Post Office | South Point Post Office | Lawrence | Unknown | |
| South Point Post Office | South Point Post Office | Lawrence | 568 | Catlettsburg |
| Steece North Post Office (historical) | Steece North Post Office (historical) | Lawrence | Unknown | |
| Strobel Post Office (historical) | Strobel Post Office (historical) | Lawrence | Unknown | |
| Suiter Post Office (historical) | Suiter Post Office (historical) | Lawrence | 928 | Aid |
| Superior Post Office (historical) | Superior Post Office (historical) | Lawrence | Unknown | |
| Sybene Post Office (historical) | Sybene Post Office (historical) | Lawrence | 561 | Catlettsburg |
| Synnes Post Office (historical) | Synnes Post Office (historical) | Lawrence | Unknown | |
| Townhouse Post Office (historical) | Townhouse Post Office (historical) | Lawrence | Unknown | |
| Vesuvius Post Office (historical) | Vesuvius Post Office (historical) | Lawrence | 732 | Ironton |
| Walton Post Office (historical) | Walton Post Office (historical) | Lawrence | Unknown | |
| Waterloo Post Office | Waterloo Post Office | Lawrence | 597 | Waterloo |
| Wilgus Post Office (historical) | Wilgus Post Office (historical) | Lawrence | 814 | Aid |
| Willow Grove Post Office (historical) | Willow Grove Post Office (historical) | Lawrence | Unknown | |
| Willowwood Post Office | Willowwood Post Office | Lawrence | 669 | Aid |
| Yarico Post Office (historical) | Yarico Post Office (historical) | Lawrence | 935 | Waterloo |
| Alexandria Post Office | Alexandria Post Office | Licking | 981 | Granville |
| Brownsville Post Office | Brownsville Post Office | Licking | 955 | Glenford |
| Croton Post Office | Croton Post Office | Licking | 1155 | Johnstown |
| Etna Post Office | Etna Post Office | Licking | 1060 | Pataskala |
| Appleton Post Office (historical) | Appleton Post Office (historical) | Licking | 1119 | Utica |
| Ash Post Office (historical) | Ash Post Office (historical) | Licking | 1224 | Jersey |
| Ashbrook Post Office (historical) | Ashbrook Post Office (historical) | Licking | Unknown | |
| Beech Post Office (historical) | Beech Post Office (historical) | Licking | 1135 | New Albany |
| Beech Land Post Office (historical) | Beech Land Post Office (historical) | Licking | Unknown | |
| Ben Post Office (historical) | Ben Post Office (historical) | Licking | 919 | Hanover |
| Brushy Fork Post Office (historical) | Brushy Fork Post Office (historical) | Licking | Unknown | |
| Clay Lick Post Office (historical) | Clay Lick Post Office (historical) | Licking | 784 | Hanover |
| Cokesbury Post Office (historical) | Cokesbury Post Office (historical) | Licking | Unknown | |
| Coninesville Post Office (historical) | Coninesville Post Office (historical) | Licking | Unknown | |
| Cox Post Office (historical) | Cox Post Office (historical) | Licking | Unknown | |
| Creek Post Office (historical) | Creek Post Office (historical) | Licking | Unknown | |
| Eden Cross Roads Post Office (historical) | Eden Cross Roads Post Office (historical) | Licking | Unknown | |
| Frampton Post Office (historical) | Frampton Post Office (historical) | Licking | 837 | Perryton |
| Fredonia Post Office (historical) | Fredonia Post Office (historical) | Licking | 1237 | Fredonia |
| Freeman Post Office (historical) | Freeman Post Office (historical) | Licking | Unknown | |
| Goff Post Office (historical) | Goff Post Office (historical) | Licking | Unknown | |
| Green Post Office (historical) | Green Post Office (historical) | Licking | 1112 | Johnstown |
| Hanover Post Office (historical) | Hanover Post Office (historical) | Licking | 830 | Hanover |
| Hickman Post Office (historical) | Hickman Post Office (historical) | Licking | 856 | Hickman |
| High Water Post Office (historical) | High Water Post Office (historical) | Licking | 1047 | Fredonia |
| Linnville Post Office (historical) | Linnville Post Office (historical) | Licking | 938 | Glenford |
| Little Claylick Post Office (historical) | Little Claylick Post Office (historical) | Licking | Unknown | |
| Luray Post Office (historical) | Luray Post Office (historical) | Licking | 928 | Millersport |
| Melgren Post Office (historical) | Melgren Post Office (historical) | Licking | Unknown | |
| Morus Hill Post Office (historical) | Morus Hill Post Office (historical) | Licking | Unknown | |
| New-way Post Office (historical) | New-way Post Office (historical) | Licking | 1220 | Fredonia |
| Granville Post Office | Granville Post Office | Licking | 958 | Granville |
| Gratiot Post Office | Gratiot Post Office | Licking | 978 | Gratiot |
| Hebron Post Office | Hebron Post Office | Licking | 886 | Thornville |
| Homer Post Office | Homer Post Office | Licking | 997 | Homer |
| Jacksontown Post Office | Jacksontown Post Office | Licking | 1007 | Thornville |
| Johnstown Post Office | Johnstown Post Office | Licking | 1155 | Johnstown |
| Kirkersville Post Office | Kirkersville Post Office | Licking | 938 | Millersport |
| Manker Post Office (historical) | Manker Post Office (historical) | Lawrence | 650 | Kitts Hill |
| Millers Post Office (historical) | Millers Post Office (historical) | Lawrence | Unknown | |
| Rappsburg Post Office (historical) | Rappsburg Post Office (historical) | Lawrence | 922 | Aid |
| Sheridan Post Office (historical) | Sheridan Post Office (historical) | Lawrence | 551 | Catlettsburg |
| Getaway Post Office (historical) | Getaway Post Office (historical) | Lawrence | 558 | Huntington |
| Miller Post Office (historical) | Miller Post Office (historical) | Lawrence | 561 | Athalia |
| Scottown Post Office | Scottown Post Office | Lawrence | 594 | Aid |
| Kitts Hill Post Office | Kitts Hill Post Office | Lawrence | 935 | Kitts Hill |
| Perryton Post Office (historical) | Perryton Post Office (historical) | Licking | 804 | Perryton |
| Purity Post Office (historical) | Purity Post Office (historical) | Licking | 1161 | Hickman |
| Reservoir Post Office (historical) | Reservoir Post Office (historical) | Licking | Unknown | |
| Reynold's Post Office (historical) | Reynold's Post Office (historical) | Licking | Unknown | |
| Rocky Fork Post Office (historical) | Rocky Fork Post Office (historical) | Licking | 869 | Hickman |
| Rowville Post Office (historical) | Rowville Post Office (historical) | Licking | Unknown | |
| Saint Joseph Post Office (historical) | Saint Joseph Post Office (historical) | Licking | Unknown | |
| Stinger Post Office (historical) | Stinger Post Office (historical) | Licking | Unknown | |
| Sylvania Post Office (historical) | Sylvania Post Office (historical) | Licking | Unknown | |
| Toboso Post Office (historical) | Toboso Post Office (historical) | Licking | 771 | Toboso |
| Union Station Post Office (historical) | Union Station Post Office (historical) | Licking | 932 | Granville |
| Vanatta Post Office (historical) | Vanatta Post Office (historical) | Licking | 876 | Utica |
| Wagram Post Office (historical) | Wagram Post Office (historical) | Licking | 1056 | Pataskala |
| Outville Post Office | Outville Post Office | Licking | Unknown | |
| Huntsville Post Office | Huntsville Post Office | Logan | 1070 | Huntsville |
| De Graff Post Office | De Graff Post Office | Logan | 1001 | De Graff |
| East Liberty Post Office | East Liberty Post Office | Logan | 1125 | East Liberty |
| Middleburg Post Office | Middleburg Post Office | Logan | 1178 | East Liberty |
| Bigsprings Post Office (historical) | Bigsprings Post Office (historical) | Logan | 1135 | Silver Creek |
| Bloom Center Post Office (historical) | Bloom Center Post Office (historical) | Logan | 1010 | Russells Point |
| Loganville Post Office (historical) | Loganville Post Office (historical) | Logan | 1010 | De Graff |
| Mac-o-chee Post Office (historical) | Mac-o-chee Post Office (historical) | Logan | 1132 | Zanesfield |
| Pickrelltown Post Office (historical) | Pickrelltown Post Office (historical) | Logan | 1407 | Zanesfield |
| Walnutgrove Post Office (historical) | Walnutgrove Post Office (historical) | Logan | 1152 | West Mansfield |
| Norman Post Office (historical) | Norman Post Office (historical) | Licking | Unknown | |
| Columbia Center Post Office (historical) | Columbia Center Post Office (historical) | Licking | 1014 | Pataskala |
| Reform Post Office (historical) | Reform Post Office (historical) | Licking | 873 | Hickman |
| Fallsburg Post Office (historical) | Fallsburg Post Office (historical) | Licking | 991 | Perryton |
| Newton Mills Post Office (historical) | Newton Mills Post Office (historical) | Licking | Unknown | |
| Jersey Post Office (historical) | Jersey Post Office (historical) | Licking | 1129 | Jersey |
| Longrun Post Office (historical) | Longrun Post Office (historical) | Licking | 958 | Hickman |
| Wilkins Post Office (historical) | Wilkins Post Office (historical) | Licking | 899 | Hickman |
| Pataskala Post Office | Pataskala Post Office | Licking | 1001 | Pataskala |
| Saint Louisville Post Office | Saint Louisville Post Office | Licking | 902 | Utica |
| Summit Station Post Office | Summit Station Post Office | Licking | 1083 | Reynoldsburg |
| Utica Post Office | Utica Post Office | Licking | 961 | Utica |
| Saint Albans Post Office | Saint Albans Post Office | Licking | Unknown | |
| Belle Center Post Office | Belle Center Post Office | Logan | 1043 | Silver Creek |
| Big Spring Post Office (historical) | Big Spring Post Office (historical) | Logan | 1135 | Silver Creek |
| Downingville Post Office (historical) | Downingville Post Office (historical) | Logan | Unknown | |
| Gretna Post Office (historical) | Gretna Post Office (historical) | Logan | 1086 | Bellefontaine |
| Harper Post Office (historical) | Harper Post Office (historical) | Logan | 1309 | Rushsylvania |
| Horton Post Office (historical) | Horton Post Office (historical) | Logan | 1063 | West Mansfield |
| Howell Post Office (historical) | Howell Post Office (historical) | Logan | Unknown | |
| New Richland Post Office (historical) | New Richland Post Office (historical) | Logan | 1043 | Huntsville |
| Mark Post Office (historical) | Mark Post Office (historical) | Logan | Unknown | |
| Muchinipee Post Office (historical) | Muchinipee Post Office (historical) | Logan | 988 | Russells Point |
| New Jerusalem Post Office (historical) | New Jerusalem Post Office (historical) | Logan | 1470 | Zanesfield |
| North Greenfield Post Office (historical) | North Greenfield Post Office (historical) | Logan | 1102 | West Mansfield |
| Northwood Post Office (historical) | Northwood Post Office (historical) | Logan | 1138 | Rushsylvania |
| Otter Creek Post Office (historical) | Otter Creek Post Office (historical) | Logan | Unknown | |
| Robinson Post Office (historical) | Robinson Post Office (historical) | Logan | Unknown | |
| Lakeview Post Office | Lakeview Post Office | Logan | 994 | Russells Point |
| Lewistown Post Office | Lewistown Post Office | Logan | 1014 | Russells Point |
| Quincy Post Office | Quincy Post Office | Logan | 1056 | De Graff |
| Rushsylvania Post Office | Rushsylvania Post Office | Logan | 1243 | Rushsylvania |
| West Mansfield Post Office | West Mansfield Post Office | Logan | 1089 | West Mansfield |
| Zanesfield Post Office | Zanesfield Post Office | Logan | 1175 | Zanesfield |
| Bairdsville Post Office (historical) | Bairdsville Post Office (historical) | Lorain | Unknown | |
| Bakers Crossing Post Office (historical) | Bakers Crossing Post Office (historical) | Lorain | Unknown | |
| Brighton Post Office (historical) | Brighton Post Office (historical) | Lorain | 906 | Brighton |
| Brownhelm Post Office (historical) | Brownhelm Post Office (historical) | Lorain | 732 | Vermilion East |
| Brownhelm Centre Post Office (historical) | Brownhelm Centre Post Office (historical) | Lorain | Unknown | |
| Brownhelm Station Post Office (historical) | Brownhelm Station Post Office (historical) | Lorain | 627 | Vermilion East |
| Copopa Post Office (historical) | Copopa Post Office (historical) | Lorain | Unknown | |
| Crandall Post Office (historical) | Crandall Post Office (historical) | Lorain | 617 | Avon |
| Fields Post Office (historical) | Fields Post Office (historical) | Lorain | 774 | West View |
| Folger Post Office (historical) | Folger Post Office (historical) | Lorain | 630 | Avon |
| Henrietta Post Office (historical) | Henrietta Post Office (historical) | Lorain | 846 | Kipton |
| Huntington Post Office (historical) | Huntington Post Office (historical) | Lorain | 961 | Sullivan |
| Amherst Post Office (historical) | Amherst Post Office (historical) | Lorain | Unknown | |
| Avon Post Office | Avon Post Office | Lorain | Unknown | |
| Columbia Station Post Office | Columbia Station Post Office | Lorain | 804 | West View |
| Wellington Post Office | Wellington Post Office | Lorain | 850 | Wellington |
| North Eaton Post Office (historical) | North Eaton Post Office (historical) | Lorain | 814 | West View |
| North Rochester Post Office (historical) | North Rochester Post Office (historical) | Lorain | Unknown | |
| Penfield Post Office (historical) | Penfield Post Office (historical) | Lorain | 843 | Lagrange |
| Pittsfield Post Office (historical) | Pittsfield Post Office (historical) | Lorain | 814 | Wellington |
| Rugby Post Office (historical) | Rugby Post Office (historical) | Lorain | 682 | Vermilion East |
| Shawville Post Office (historical) | Shawville Post Office (historical) | Lorain | 738 | Avon |
| Sheffield Post Office (historical) | Sheffield Post Office (historical) | Lorain | 673 | Avon |
| Trinity Post Office (historical) | Trinity Post Office (historical) | Lorain | 692 | Avon |
| Turners Mills Post Office (historical) | Turners Mills Post Office (historical) | Lorain | Unknown | |
| Amherst Post Office | Amherst Post Office | Lorain | 610 | Lorain |
| Elyria Post Office | Elyria Post Office | Lorain | 732 | Grafton |
| Lorain Post Office | Lorain Post Office | Lorain | 610 | Lorain |
| Avon Lake Post Office | Avon Lake Post Office | Lorain | 607 | Avon OE N |
| Grafton Post Office | Grafton Post Office | Lorain | 807 | Grafton |
| Kipton Post Office | Kipton Post Office | Lorain | 853 | Kipton |
| Lagrange Post Office | Lagrange Post Office | Lorain | 823 | Lagrange |
| Oberlin Post Office | Oberlin Post Office | Lorain | 814 | Oberlin |
| Lakebreeze Post Office (historical) | Lakebreeze Post Office (historical) | Lorain | 594 | Avon |
| Nickelplate Post Office (historical) | Nickelplate Post Office (historical) | Lorain | 781 | Oberlin |
| La Porte Post Office (historical) | La Porte Post Office (historical) | Lorain | 758 | Grafton |
| North Camden Post Office (historical) | North Camden Post Office (historical) | Lorain | Unknown | |
| North Ridgeville Post Office | North Ridgeville Post Office | Lorain | 728 | Avon |
| Rochester Post Office (historical) | Rochester Post Office (historical) | Lorain | 928 | Brighton |
| Belden Post Office (historical) | Belden Post Office (historical) | Lorain | 869 | Lagrange |
| Black River Post Office (historical) | Black River Post Office (historical) | Lorain | Unknown | |
| Alvesta Post Office (historical) | Alvesta Post Office (historical) | Lucas | Unknown | |
| Bailey Post Office (historical) | Bailey Post Office (historical) | Lucas | 663 | Grand Rapids |
| Baileys Post Office (historical) | Baileys Post Office (historical) | Lucas | Unknown | |
| Bono Post Office (historical) | Bono Post Office (historical) | Lucas | 574 | Reno Beach |
| Drakes Post Office (historical) | Drakes Post Office (historical) | Lucas | Unknown | |
| Francher Post Office (historical) | Francher Post Office (historical) | Lucas | Unknown | |
| Glanntown Post Office (historical) | Glanntown Post Office (historical) | Lucas | Unknown | |
| Hickory Post Office (historical) | Hickory Post Office (historical) | Lucas | Unknown | |
| Hunt Post Office (historical) | Hunt Post Office (historical) | Lucas | Unknown | |
| Ironville Post Office (historical) | Ironville Post Office (historical) | Lucas | 591 | Oregon |
| Java Post Office (historical) | Java Post Office (historical) | Lucas | Unknown | |
| Manhattan Post Office (historical) | Manhattan Post Office (historical) | Lucas | Unknown | |
| Mitchaw Post Office (historical) | Mitchaw Post Office (historical) | Lucas | 679 | Berkey |
| Momeneetown Post Office (historical) | Momeneetown Post Office (historical) | Lucas | 587 | Oregon |
| Neowash Post Office (historical) | Neowash Post Office (historical) | Lucas | 659 | Grand Rapids |
| Nero Post Office (historical) | Nero Post Office (historical) | Lucas | Unknown | |
| North Otsego Post Office (historical) | North Otsego Post Office (historical) | Lucas | Unknown | |
| Harbor View Post Office | Harbor View Post Office | Lucas | 581 | Oregon |
| Monclova Post Office | Monclova Post Office | Lucas | 636 | Maumee |
| Neapolis Post Office | Neapolis Post Office | Lucas | 666 | Grand Rapids |
| Avon Lake Post Office (historical) | Avon Lake Post Office (historical) | Lorain | 659 | Avon |
| Carlisle Post Office (historical) | Carlisle Post Office (historical) | Lorain | Unknown | |
| Labelle Post Office (historical) | Labelle Post Office (historical) | Lawrence | Unknown | |
| National Roads Post Office (historical) | National Roads Post Office (historical) | Licking | Unknown | |
| Ryansville Post Office (historical) | Ryansville Post Office (historical) | Lawrence | Unknown | |
| Airline Junction Post Office (historical) | Airline Junction Post Office (historical) | Lucas | 620 | Toledo |
| Auburndale Post Office (historical) | Auburndale Post Office (historical) | Lucas | 614 | Toledo |
| Richards Post Office (historical) | Richards Post Office (historical) | Lucas | 627 | Sylvania |
| East Toledo Post Office (historical) | East Toledo Post Office (historical) | Lucas | 610 | Toledo |
| Richfield Center Post Office (historical) | Richfield Center Post Office (historical) | Lucas | 692 | Berkey |
| Tremainville Post Office (historical) | Tremainville Post Office (historical) | Lucas | Unknown | |
| Berkey Post Office | Berkey Post Office | Lucas | 702 | Berkey |
| Holland Post Office | Holland Post Office | Lucas | 636 | Maumee |
| Oak Groves Post Office (historical) | Oak Groves Post Office (historical) | Lucas | Unknown | |
| Oregon Post Office (historical) | Oregon Post Office (historical) | Lucas | 600 | Oregon |
| Presque Isle Post Office (historical) | Presque Isle Post Office (historical) | Lucas | 623 | Maumee |
| Providence Post Office (historical) | Providence Post Office (historical) | Lucas | 663 | Grand Rapids |
| Providence Centre Post Office (historical) | Providence Centre Post Office (historical) | Lucas | Unknown | |
| Raab Post Office (historical) | Raab Post Office (historical) | Lucas | Unknown | |
| Reynolds Corners Post Office (historical) | Reynolds Corners Post Office (historical) | Lucas | 627 | Sylvania |
| Silica Post Office (historical) | Silica Post Office (historical) | Lucas | 669 | Sylvania |
| Trilby Post Office (historical) | Trilby Post Office (historical) | Lucas | 630 | Toledo |
| Waterville Post Office | Waterville Post Office | Lucas | 614 | Maumee |
| West Toledo Post Office (historical) | West Toledo Post Office (historical) | Lucas | 604 | Toledo |
| Yondota Post Office (historical) | Yondota Post Office (historical) | Lucas | 577 | Reno Beach |
| York Centre Post Office (historical) | York Centre Post Office (historical) | Lucas | Unknown | |
| Big Plain Post Office (historical) | Big Plain Post Office (historical) | Madison | 981 | Big Plain |
| Chenoweth Post Office (historical) | Chenoweth Post Office (historical) | Madison | 955 | Mount Sterling |
| Chrisman Post Office (historical) | Chrisman Post Office (historical) | Madison | 991 | Big Plain |
| Diaz Post Office (historical) | Diaz Post Office (historical) | Madison | Unknown | |
| Gullivan Post Office (historical) | Gullivan Post Office (historical) | Madison | Unknown | |
| Indian Spring Post Office (historical) | Indian Spring Post Office (historical) | Madison | Unknown | |
| Johnstons Post Office (historical) | Johnstons Post Office (historical) | Madison | Unknown | |
| Kileville Post Office (historical) | Kileville Post Office (historical) | Madison | 948 | Hilliard |
| Kiousville Post Office (historical) | Kiousville Post Office (historical) | Madison | 938 | Big Plain |
| Lilly Chapel Post Office (historical) | Lilly Chapel Post Office (historical) | Madison | 978 | West Jefferson |
| Nioga Post Office (historical) | Nioga Post Office (historical) | Madison | 948 | Big Plain |
| Plumwood Post Office (historical) | Plumwood Post Office (historical) | Madison | 1007 | Plumwood |
| Powers Post Office (historical) | Powers Post Office (historical) | Madison | Unknown | |
| Powhatan Post Office (historical) | Powhatan Post Office (historical) | Madison | Unknown | |
| Range Post Office (historical) | Range Post Office (historical) | Madison | 1014 | Midway |
| Resaca Post Office (historical) | Resaca Post Office (historical) | Madison | 981 | Plumwood |
| Rosedale Post Office (historical) | Rosedale Post Office (historical) | Madison | 1010 | Plumwood |
| Rupert Post Office (historical) | Rupert Post Office (historical) | Madison | 965 | West Jefferson |
| Summerford Post Office (historical) | Summerford Post Office (historical) | Madison | 1093 | New Moorefield |
| Tradersville Post Office (historical) | Tradersville Post Office (historical) | Madison | 1099 | London |
| Wahoo Post Office (historical) | Wahoo Post Office (historical) | Madison | Unknown | |
| Warnersville Post Office (historical) | Warnersville Post Office (historical) | Madison | Unknown | |
| West Canaan Post Office (historical) | West Canaan Post Office (historical) | Madison | Unknown | |
| Wrightsville Post Office (historical) | Wrightsville Post Office (historical) | Madison | 951 | Harrisburg |
| Mount Sterling Post Office | Mount Sterling Post Office | Madison | 902 | Mount Sterling |
| South Solon Post Office | South Solon Post Office | Madison | 1115 | Jeffersonville |
| Lafayette Post Office (historical) | Lafayette Post Office (historical) | Madison | 1010 | London |
| Walnutrun Post Office (historical) | Walnutrun Post Office (historical) | Madison | Unknown | |
| Grassy Point Post Office (historical) | Grassy Point Post Office (historical) | Madison | Unknown | |
| Sedalia Post Office | Sedalia Post Office | Madison | Unknown | |
| Kyles Corner Post Office (historical) | Kyles Corner Post Office (historical) | Mahoning | 1079 | Youngstown |
| Hannas Mills Post Office (historical) | Hannas Mills Post Office (historical) | Mahoning | Unknown | |
| Ohlstown Post Office (historical) | Ohlstown Post Office (historical) | Mahoning | 961 | Warren |
| Rosemont Post Office (historical) | Rosemont Post Office (historical) | Mahoning | 1073 | Lake Milton |
| Blanco Post Office (historical) | Blanco Post Office (historical) | Mahoning | 988 | Lake Milton |
| Brier Hill Post Office (historical) | Brier Hill Post Office (historical) | Mahoning | 1037 | Youngstown |
| Loveland Station Post Office (historical) | Loveland Station Post Office (historical) | Mahoning | Unknown | |
| Cornersburg Post Office (historical) | Cornersburg Post Office (historical) | Mahoning | 1043 | Youngstown |
| West Austintown Post Office (historical) | West Austintown Post Office (historical) | Mahoning | 1004 | Canfield |
| Damascus Post Office | Damascus Post Office | Mahoning | 1214 | Damascus |
| Boardman Rural Station Post Office (historical) | Boardman Rural Station Post Office (historical) | Mahoning | 1102 | Youngstown |
| Boswell Post Office (historical) | Boswell Post Office (historical) | Mahoning | 1188 | Damascus |
| Calla Post Office (historical) | Calla Post Office (historical) | Mahoning | Unknown | |
| Coitsville Post Office (historical) | Coitsville Post Office (historical) | Mahoning | 1079 | Campbell |
| East Lewistown Post Office (historical) | East Lewistown Post Office (historical) | Mahoning | 1129 | Columbiana |
| Ellsworth Post Office (historical) | Ellsworth Post Office (historical) | Mahoning | 1050 | Canfield |
| Frederick Post Office (historical) | Frederick Post Office (historical) | Mahoning | Unknown | |
| Garfield Post Office (historical) | Garfield Post Office (historical) | Mahoning | 1152 | Damascus |
| Goshen Mills Post Office (historical) | Goshen Mills Post Office (historical) | Mahoning | Unknown | |
| Greenford Post Office | Greenford Post Office | Mahoning | 1240 | Salem |
| Haselton Post Office (historical) | Haselton Post Office (historical) | Mahoning | 853 | Campbell |
| Hickory Post Office (historical) | Hickory Post Office (historical) | Mahoning | Unknown | |
| Kirk Post Office (historical) | Kirk Post Office (historical) | Mahoning | Unknown | |
| Knaufville Post Office (historical) | Knaufville Post Office (historical) | Mahoning | 1093 | Salem |
| Lake Milton Post Office | Lake Milton Post Office | Mahoning | 988 | Lake Milton |
| Milton Post Office (historical) | Milton Post Office (historical) | Mahoning | Unknown | |
| New Albany Post Office (historical) | New Albany Post Office (historical) | Mahoning | 1073 | Salem |
| New Buffalo Post Office (historical) | New Buffalo Post Office (historical) | Mahoning | 1142 | Damascus |
| New Middletown Post Office | New Middletown Post Office | Mahoning | 1250 | New Middletown |
| North Benton Post Office | North Benton Post Office | Mahoning | 1066 | Alliance |
| North Jackson Post Office | North Jackson Post Office | Mahoning | 1020 | Canfield |
| North Lima Post Office | North Lima Post Office | Mahoning | 1099 | Columbiana |
| Patmos Post Office (historical) | Patmos Post Office (historical) | Mahoning | 1211 | Damascus |
| Perkins Post Office (historical) | Perkins Post Office (historical) | Mahoning | Unknown | |
| Poland Post Office (historical) | Poland Post Office (historical) | Mahoning | 1043 | Campbell |
| Poland Centre Post Office (historical) | Poland Centre Post Office (historical) | Mahoning | 1145 | Campbell |
| Pottersville Post Office (historical) | Pottersville Post Office (historical) | Mahoning | Unknown | |
| Sample Post Office (historical) | Sample Post Office (historical) | Mahoning | Unknown | |
| Scienceville Post Office (historical) | Scienceville Post Office (historical) | Mahoning | 1014 | Campbell |
| Sebring Post Office | Sebring Post Office | Mahoning | 1102 | Alliance |
| Sharline Post Office (historical) | Sharline Post Office (historical) | Mahoning | Unknown | |
| Snodes Post Office (historical) | Snodes Post Office (historical) | Mahoning | 1115 | Damascus |
| Steamtown Post Office (historical) | Steamtown Post Office (historical) | Mahoning | Unknown | |
| Subrosa Post Office (historical) | Subrosa Post Office (historical) | Mahoning | 1207 | New Middletown |
| Tiger Post Office (historical) | Tiger Post Office (historical) | Mahoning | 978 | Newton Falls |
| Woodworth Post Office (historical) | Woodworth Post Office (historical) | Mahoning | 1076 | Columbiana |
| Youngstown Post Office | Youngstown Post Office | Mahoning | 856 | Youngstown |
| Beloit Post Office | Beloit Post Office | Mahoning | 1132 | Damascus |
| Adelaide Post Office (historical) | Adelaide Post Office (historical) | Marion | Unknown | |
| Benzler Post Office (historical) | Benzler Post Office (historical) | Marion | Unknown | |
| Big Island Post Office (historical) | Big Island Post Office (historical) | Marion | 932 | Marion West |
| Claridon Post Office (historical) | Claridon Post Office (historical) | Marion | 988 | Denmark |
| Codding Post Office (historical) | Codding Post Office (historical) | Marion | Unknown | |
| Espyville Post Office (historical) | Espyville Post Office (historical) | Marion | 942 | New Bloomington |
| Grand Prairie Post Office (historical) | Grand Prairie Post Office (historical) | Marion | Unknown | |
| Hoover Post Office (historical) | Hoover Post Office (historical) | Marion | Unknown | |
| Kirkpatrick Post Office (historical) | Kirkpatrick Post Office (historical) | Marion | 1010 | Monnett |
| Letimberville Post Office (historical) | Letimberville Post Office (historical) | Marion | Unknown | |
| Little Scioto Post Office (historical) | Little Scioto Post Office (historical) | Marion | Unknown | |
| Longville Post Office (historical) | Longville Post Office (historical) | Marion | 915 | Marion West |
| Middle Spring Post Office (historical) | Middle Spring Post Office (historical) | Marion | Unknown | |
| Green Camp Post Office | Green Camp Post Office | Marion | 915 | Marion West |
| Morral Post Office | Morral Post Office | Marion | 909 | Morral |
| New Bloomington Post Office | New Bloomington Post Office | Marion | 942 | New Bloomington |
| La Rue Post Office | La Rue Post Office | Marion | 925 | La Rue |
| Meeker Post Office (historical) | Meeker Post Office (historical) | Marion | 896 | Meeker |
| Gurley Post Office (historical) | Gurley Post Office (historical) | Marion | 919 | New Bloomington |
| Rupps Post Office (historical) | Rupps Post Office (historical) | Marion | Unknown | |
| Ruth Post Office (historical) | Ruth Post Office (historical) | Marion | 915 | Marion West |
| Tobias Post Office (historical) | Tobias Post Office (historical) | Marion | 968 | Monnett |
| Underwoods Post Office (historical) | Underwoods Post Office (historical) | Marion | Unknown | |
| Wilson Post Office (historical) | Wilson Post Office (historical) | Marion | Unknown | |
| Waldo Post Office | Waldo Post Office | Marion | 942 | Waldo |
| Prospect Post Office | Prospect Post Office | Marion | 909 | Prospect |
| Owens Post Office (historical) | Owens Post Office (historical) | Marion | 942 | Marion West |
| Abbeyville Post Office (historical) | Abbeyville Post Office (historical) | Medina | 883 | Mallet Creek |
| Acme Post Office (historical) | Acme Post Office (historical) | Medina | 1197 | Seville |
| Beebetown Post Office (historical) | Beebetown Post Office (historical) | Medina | 942 | West View |
| Bennetts Corners Post Office (historical) | Bennetts Corners Post Office (historical) | Medina | 1053 | Berea |
| Blake Post Office (historical) | Blake Post Office (historical) | Medina | 1194 | Seville |
| Boneta Post Office (historical) | Boneta Post Office (historical) | Medina | 1112 | Seville |
| Clayburgh Post Office (historical) | Clayburgh Post Office (historical) | Medina | Unknown | |
| Crawford's Mills Post Office (historical) | Crawford's Mills Post Office (historical) | Medina | Unknown | |
| Erhart Post Office (historical) | Erhart Post Office (historical) | Medina | 951 | Mallet Creek |
| Friendsville Post Office (historical) | Friendsville Post Office (historical) | Medina | 1063 | Westfield Center |
| Granger Post Office (historical) | Granger Post Office (historical) | Medina | 1096 | West Richfield |
| Haldo Post Office (historical) | Haldo Post Office (historical) | Medina | Unknown | |
| Lester Post Office (historical) | Lester Post Office (historical) | Medina | 932 | Mallet Creek |
| Munson Post Office (historical) | Munson Post Office (historical) | Medina | Unknown | |
| Pawnee Post Office (historical) | Pawnee Post Office (historical) | Medina | 912 | Lodi |
| Pliny Post Office (historical) | Pliny Post Office (historical) | Medina | 840 | Mallet Creek |
| Poe Post Office (historical) | Poe Post Office (historical) | Medina | 1207 | Seville |
| Remson's Corners Post Office (historical) | Remson's Corners Post Office (historical) | Medina | 1194 | West Richfield |
| Chatham Post Office (historical) | Chatham Post Office (historical) | Medina | 1079 | Lodi |
| Weymouth Post Office (historical) | Weymouth Post Office (historical) | Medina | 801 | Flat Rock |
| Whittlesey Post Office (historical) | Whittlesey Post Office (historical) | Medina | Unknown | |
| Windfall Post Office (historical) | Windfall Post Office (historical) | Medina | 853 | Flat Rock |
| Mallett Creek Post Office (historical) | Mallett Creek Post Office (historical) | Medina | 1010 | Mallet Creek |
| River Styx Post Office (historical) | River Styx Post Office (historical) | Medina | 1024 | Seville |
| Valley City Post Office | Valley City Post Office | Medina | 814 | Mallet Creek |
| Brunswick Post Office | Brunswick Post Office | Medina | 1171 | Medina |
| Chippewa Lake Post Office | Chippewa Lake Post Office | Medina | 1024 | Westfield Center |
| Hinckley Post Office | Hinckley Post Office | Medina | 1096 | West Richfield |
| Litchfield Post Office | Litchfield Post Office | Medina | 1001 | Lagrange |
| Lodi Post Office | Lodi Post Office | Medina | 922 | Lodi |
| Seville Post Office | Seville Post Office | Medina | 988 | Seville |
| Spencer Post Office | Spencer Post Office | Medina | 1214 | Seville |
| Smithroad Post Office (historical) | Smithroad Post Office (historical) | Medina | Unknown | |
| Westfield Center Post Office | Westfield Center Post Office | Medina | 1099 | Westfield Center |
| Austintown Post Office (historical) | Austintown Post Office (historical) | Mahoning | 1125 | Canfield |
| Alfred Post Office (historical) | Alfred Post Office (historical) | Meigs | 686 | Alfred |
| Antiquity Post Office (historical) | Antiquity Post Office (historical) | Meigs | 574 | New Haven |
| Bradbury Post Office (historical) | Bradbury Post Office (historical) | Meigs | 574 | Pomeroy |
| Buffingtons Island Post Office (historical) | Buffingtons Island Post Office (historical) | Meigs | Unknown | |
| Burlingham Post Office (historical) | Burlingham Post Office (historical) | Meigs | 673 | Shade |
| Darwin Post Office (historical) | Darwin Post Office (historical) | Meigs | 689 | Shade |
| Dorcas Post Office (historical) | Dorcas Post Office (historical) | Meigs | 591 | New Haven |
| Dyesville Post Office (historical) | Dyesville Post Office (historical) | Meigs | 614 | Albany |
| Echo Post Office (historical) | Echo Post Office (historical) | Meigs | Unknown | |
| Elden Post Office (historical) | Elden Post Office (historical) | Meigs | 787 | Portland |
| Guthrie Post Office (historical) | Guthrie Post Office (historical) | Meigs | Unknown | |
| Hanesville Post Office (historical) | Hanesville Post Office (historical) | Meigs | 630 | Rutland |
| Dexter Post Office | Dexter Post Office | Meigs | 591 | Rutland |
| Harrisonville Post Office | Harrisonville Post Office | Meigs | 666 | Albany |
| Chester Post Office | Chester Post Office | Meigs | 630 | Chester |
| Hemlock Post Office | Hemlock Post Office | Meigs | 748 | Chester |
| Langsville Post Office | Langsville Post Office | Meigs | 577 | Rutland |
| Long Bottom Post Office | Long Bottom Post Office | Meigs | 600 | Portland |
| Rutland Post Office | Rutland Post Office | Meigs | 577 | Rutland |
| Joppa Post Office (historical) | Joppa Post Office (historical) | Meigs | 869 | Coolville |
| Kingsbury Office (historical) | Kingsbury Office (historical) | Meigs | 656 | Pomeroy |
| Ledlies Post Office (historical) | Ledlies Post Office (historical) | Meigs | Unknown | |
| Lotta Post Office (historical) | Lotta Post Office (historical) | Meigs | Unknown | |
| Lulu Post Office (historical) | Lulu Post Office (historical) | Meigs | Unknown | |
| McKinstrys Creek Post Office (historical) | McKinstrys Creek Post Office (historical) | Meigs | Unknown | |
| Merritt Creek Post Office (historical) | Merritt Creek Post Office (historical) | Meigs | Unknown | |
| Olive Centre Post Office (historical) | Olive Centre Post Office (historical) | Meigs | Unknown | |
| Plants Post Office (historical) | Plants Post Office (historical) | Meigs | 607 | New Haven |
| Rock Springs Post Office (historical) | Rock Springs Post Office (historical) | Meigs | 656 | Pomeroy |
| Rolandus Post Office (historical) | Rolandus Post Office (historical) | Meigs | 577 | Ravenswood |
| Saxon Post Office (historical) | Saxon Post Office (historical) | Meigs | 594 | Ravenswood |
| Silver Run Post Office (historical) | Silver Run Post Office (historical) | Meigs | 577 | Cheshire |
| Snowville Post Office (historical) | Snowville Post Office (historical) | Meigs | 699 | Shade |
| Spiller Post Office (historical) | Spiller Post Office (historical) | Meigs | 712 | Ravenswood |
| Success Post Office (historical) | Success Post Office (historical) | Meigs | 705 | Coolville |
| Ulric Post Office (historical) | Ulric Post Office (historical) | Meigs | 807 | Ravenswood |
| Wolfpen Post Office (historical) | Wolfpen Post Office (historical) | Meigs | 623 | Pomeroy |
| Zeal Post Office (historical) | Zeal Post Office (historical) | Meigs | 653 | Vales Mills |
| Syracuse Post Office | Syracuse Post Office | Meigs | 587 | New Haven |
| Tuppers Plains Post Office | Tuppers Plains Post Office | Meigs | 741 | Coolville |
| Beech Grove Post Office (historical) | Beech Grove Post Office (historical) | Meigs | Unknown | |
| Alberta Post Office (historical) | Alberta Post Office (historical) | Meigs | Unknown | |
| Boardman Post Office | Boardman Post Office | Mahoning | Unknown | |
| Mercer Post Office (historical) | Mercer Post Office (historical) | Mercer | 804 | Mendon |
| Skeels Crossroads Post Office (historical) | Skeels Crossroads Post Office (historical) | Mercer | 879 | New Corydon |
| Stedcke Post Office (historical) | Stedcke Post Office (historical) | Mercer | Unknown | |
| Reservoir Post Office (historical) | Reservoir Post Office (historical) | Mercer | Unknown | |
| Rockford Post Office | Rockford Post Office | Mercer | 814 | Rockford |
| Saint Henry Post Office | Saint Henry Post Office | Mercer | 971 | Coldwater |
| Chickasaw Lake Post Office | Chickasaw Lake Post Office | Mercer | 938 | New Bremen |
| Fort Recovery Post Office | Fort Recovery Post Office | Mercer | 942 | Fort Recovery |
| Mendon Post Office | Mendon Post Office | Mercer | 817 | Mendon |
| Montezuma Post Office | Montezuma Post Office | Mercer | 883 | Montezuma |
| Racine Post Office | Racine Post Office | Meigs | 577 | New Haven |
| Berkettsville Post Office | Berkettsville Post Office | Mercer | 974 | Rossburg |
| Carthagena Post Office | Carthagena Post Office | Mercer | 912 | Montezuma |
| Middleport Post Office | Middleport Post Office | Meigs | 571 | Pomeroy |
| Pomeroy Post Office | Pomeroy Post Office | Meigs | 577 | Pomeroy |
| Portland Post Office | Portland Post Office | Meigs | 614 | Portland |
| Applegrove Post Office (historical) | Applegrove Post Office (historical) | Meigs | 594 | Ravenswood |
| Merritt Post Office (historical) | Merritt Post Office (historical) | Meigs | 906 | Portland |
| Greatbend Post Office (historical) | Greatbend Post Office (historical) | Meigs | 607 | Ravenswood |
| Sumner Post Office (historical) | Sumner Post Office (historical) | Meigs | 705 | Alfred |
| Pointrock Post Office (historical) | Pointrock Post Office (historical) | Meigs | 755 | Vales Mills |
| Salem Center Post Office (historical) | Salem Center Post Office (historical) | Meigs | 741 | Wilkesville |
| Brehm Post Office (historical) | Brehm Post Office (historical) | Mercer | 843 | Erastus |
| Cassella Post Office (historical) | Cassella Post Office (historical) | Mercer | 948 | Montezuma |
| Chattanooga Post Office (historical) | Chattanooga Post Office (historical) | Mercer | 837 | Willshire |
| Lena Post Office (historical) | Lena Post Office (historical) | Miami | 1129 | Fletcher |
| Bloomer Post Office (historical) | Bloomer Post Office (historical) | Miami | 1020 | Versailles |
| Ginghamsburg Post Office (historical) | Ginghamsburg Post Office (historical) | Miami | 955 | Tipp City |
| West Charleston Post Office (historical) | West Charleston Post Office (historical) | Miami | 958 | Tipp City |
| Casstown Post Office | Casstown Post Office | Miami | 932 | Troy |
| Covington Post Office | Covington Post Office | Miami | 925 | Pleasant Hill |
| Piqua Post Office | Piqua Post Office | Miami | 876 | Piqua East |
| Ludlow Falls Post Office | Ludlow Falls Post Office | Miami | 902 | West Milton |
| West Milton Post Office | West Milton Post Office | Miami | 902 | West Milton |
| Pleasant Hill Post Office | Pleasant Hill Post Office | Miami | 932 | Pleasant Hill |
| Troy Post Office | Troy Post Office | Miami | 830 | Troy |
| Tipp City Post Office | Tipp City Post Office | Miami | 827 | Tipp City |
| Potsdam Post Office | Potsdam Post Office | Miami | 1007 | Laura |
| Cranberry Prairie Post Office (historical) | Cranberry Prairie Post Office (historical) | Mercer | 994 | Montezuma |
| Durbin Post Office (historical) | Durbin Post Office (historical) | Mercer | 863 | Erastus |
| Earley Post Office (historical) | Earley Post Office (historical) | Mercer | 833 | Celina |
| Erastus Post Office (historical) | Erastus Post Office (historical) | Mercer | 896 | Erastus |
| Ferner Post Office (historical) | Ferner Post Office (historical) | Mercer | Unknown | |
| Hinton Post Office (historical) | Hinton Post Office (historical) | Mercer | 856 | Erastus |
| Macedon Post Office (historical) | Macedon Post Office (historical) | Mercer | 902 | Fort Recovery |
| Marcellus Post Office (historical) | Marcellus Post Office (historical) | Mercer | Unknown | |
| Neptune Post Office (historical) | Neptune Post Office (historical) | Mercer | 850 | Saint Marys |
| Padua Post Office (historical) | Padua Post Office (historical) | Mercer | 896 | New Corydon |
| Philothea Post Office (historical) | Philothea Post Office (historical) | Mercer | 928 | Coldwater |
| Pond Post Office (historical) | Pond Post Office (historical) | Mercer | Unknown | |
| Price Post Office (historical) | Price Post Office (historical) | Mercer | Unknown | |
| Saint Peters Post Office (historical) | Saint Peters Post Office (historical) | Mercer | 945 | Coldwater |
| Saint Rosa Post Office (historical) | Saint Rosa Post Office (historical) | Mercer | 961 | Montezuma |
| Scudder Post Office (historical) | Scudder Post Office (historical) | Mercer | 892 | Erastus |
| Sebastian Post Office (historical) | Sebastian Post Office (historical) | Mercer | 928 | Montezuma |
| Shaffers Station Post Office (historical) | Shaffers Station Post Office (historical) | Mercer | Unknown | |
| Tamah Post Office (historical) | Tamah Post Office (historical) | Mercer | 830 | Mendon |
| Victoria Post Office (historical) | Victoria Post Office (historical) | Mercer | Unknown | |
| Violet Post Office (historical) | Violet Post Office (historical) | Mercer | Unknown | |
| Wabash Post Office (historical) | Wabash Post Office (historical) | Mercer | 876 | New Corydon |
| Wendlin Post Office (historical) | Wendlin Post Office (historical) | Mercer | 955 | Coldwater |
| Abe Post Office (historical) | Abe Post Office (historical) | Miami | 971 | Piqua West |
| Alcony Post Office (historical) | Alcony Post Office (historical) | Miami | 988 | Christiansburg |
| Boyd Post Office (historical) | Boyd Post Office (historical) | Miami | Unknown | |
| Bradford Post Office | Bradford Post Office | Miami | 988 | Versailles |
| Brandt Post Office (historical) | Brandt Post Office (historical) | Miami | 991 | New Carlisle |
| Conover Post Office | Conover Post Office | Miami | 1129 | Fletcher |
| Conquest Post Office (historical) | Conquest Post Office (historical) | Miami | Unknown | |
| Fair Mount Post Office (historical) | Fair Mount Post Office (historical) | Miami | Unknown | |
| Fidelity Post Office (historical) | Fidelity Post Office (historical) | Miami | Unknown | |
| Fletcher Post Office | Fletcher Post Office | Miami | 1050 | Fletcher |
| Garland Post Office (historical) | Garland Post Office (historical) | Miami | 1027 | West Milton |
| Grayson Post Office (historical) | Grayson Post Office (historical) | Miami | 814 | Tipp City |
| Kessler Post Office (historical) | Kessler Post Office (historical) | Miami | 915 | West Milton |
| Laura Post Office | Laura Post Office | Miami | 991 | Laura |
| North Clayton Post Office (historical) | North Clayton Post Office (historical) | Miami | Unknown | |
| Patty Post Office (historical) | Patty Post Office (historical) | Miami | Unknown | |
| Petersons Station Post Office (historical) | Petersons Station Post Office (historical) | Miami | Unknown | |
| Phoneton Post Office | Phoneton Post Office | Miami | 978 | Tipp City |
| Polo Post Office (historical) | Polo Post Office (historical) | Miami | 951 | Piqua West |
| Rex Post Office (historical) | Rex Post Office (historical) | Miami | Unknown | |
| Aitch Post Office (historical) | Aitch Post Office (historical) | Monroe | Unknown | |
| Alexis Post Office (historical) | Alexis Post Office (historical) | Monroe | 781 | Antioch |
| Alum Run Post Office (historical) | Alum Run Post Office (historical) | Monroe | Unknown | |
| Antioch Post Office | Antioch Post Office | Monroe | 1066 | Antioch |
| Beallsville Post Office | Beallsville Post Office | Monroe | 1201 | Woodsfield |
| Benwood Post Office (historical) | Benwood Post Office (historical) | Monroe | 850 | Antioch |
| Bingham Post Office (historical) | Bingham Post Office (historical) | Monroe | 1280 | Cameron |
| Brister Post Office (historical) | Brister Post Office (historical) | Monroe | 889 | Summerfield |
| Burkhart Post Office (historical) | Burkhart Post Office (historical) | Monroe | 932 | Summerfield |
| Calais Post Office (historical) | Calais Post Office (historical) | Monroe | 860 | Summerfield |
| Cline Post Office (historical) | Cline Post Office (historical) | Monroe | 781 | Rinard Mills |
| Coats Post Office (historical) | Coats Post Office (historical) | Monroe | 833 | Woodsfield |
| Congars Post Office (historical) | Congars Post Office (historical) | Monroe | Unknown | |
| Crosskeys Post Office (historical) | Crosskeys Post Office (historical) | Monroe | 1027 | Rinard Mills |
| Dairy Post Office (historical) | Dairy Post Office (historical) | Monroe | 1276 | Round Bottom |
| Doherty Post Office (historical) | Doherty Post Office (historical) | Monroe | 935 | Summerfield |
| Duffy Post Office (historical) | Duffy Post Office (historical) | Monroe | 663 | New Martinsville |
| Dwight Post Office (historical) | Dwight Post Office (historical) | Monroe | 1276 | Cameron |
| Edith Post Office (historical) | Edith Post Office (historical) | Monroe | Unknown | |
| Edwina Post Office (historical) | Edwina Post Office (historical) | Monroe | 801 | Graysville |
| Ethel Post Office (historical) | Ethel Post Office (historical) | Monroe | Unknown | |
| Fair Pleasant Post Office (historical) | Fair Pleasant Post Office (historical) | Monroe | Unknown | |
| Fly Post Office | Fly Post Office | Monroe | 712 | New Matamoras |
| Glee Post Office (historical) | Glee Post Office (historical) | Monroe | Unknown | |
| Glenn's Post Office (historical) | Glenn's Post Office (historical) | Monroe | Unknown | |
| Goodwin Post Office (historical) | Goodwin Post Office (historical) | Monroe | 1230 | Round Bottom |
| Graham Post Office (historical) | Graham Post Office (historical) | Monroe | 1076 | Graysville |
| Graysville Post Office | Graysville Post Office | Monroe | Unknown | |
| Griffith Post Office (historical) | Griffith Post Office (historical) | Monroe | 1158 | Antioch |
| Hartshorn Post Office (historical) | Hartshorn Post Office (historical) | Monroe | 1138 | Graysville |
| Hope Ridge Post Office (historical) | Hope Ridge Post Office (historical) | Monroe | 1115 | Woodsfield |
| Jerles Post Office (historical) | Jerles Post Office (historical) | Monroe | 1060 | Stafford |
| Jerusalem Post Office (historical) | Jerusalem Post Office (historical) | Monroe | Unknown | |
| Jolly Post Office (historical) | Jolly Post Office (historical) | Monroe | Unknown | |
| Jonesville Post Office (historical) | Jonesville Post Office (historical) | Monroe | Unknown | |
| Kuhn Post Office (historical) | Kuhn Post Office (historical) | Monroe | Unknown | |
| Lainges Post Office | Lainges Post Office | Monroe | 1027 | Antioch |
| Lecompton Post Office (historical) | Lecompton Post Office (historical) | Monroe | Unknown | |
| Lyman Post Office (historical) | Lyman Post Office (historical) | Monroe | Unknown | |
| Malaga Post Office | Malaga Post Office | Monroe | 1306 | Lewisville |
| Marr Post Office (historical) | Marr Post Office (historical) | Monroe | 758 | Graysville |
| Masterson Post Office (historical) | Masterson Post Office (historical) | Monroe | Unknown | |
| Monroefield Post Office (historical) | Monroefield Post Office (historical) | Monroe | 1237 | Lewisville |
| Morton Post Office (historical) | Morton Post Office (historical) | Monroe | 1293 | Round Bottom |
| Mount Carrick Post Office (historical) | Mount Carrick Post Office (historical) | Monroe | 1217 | Woodsfield |
| Oak Post Office (historical) | Oak Post Office (historical) | Monroe | 1345 | Round Bottom |
| Ozark Post Office (historical) | Ozark Post Office (historical) | Monroe | 1250 | Woodsfield |
| Perryopolis Post Office (historical) | Perryopolis Post Office (historical) | Monroe | Unknown | |
| Plainview Post Office (historical) | Plainview Post Office (historical) | Monroe | 1102 | Antioch |
| Pleasant Fountain Post Office (historical) | Pleasant Fountain Post Office (historical) | Monroe | Unknown | |
| Poulton Post Office (historical) | Poulton Post Office (historical) | Monroe | 732 | New Matamoras |
| Quarry Post Office (historical) | Quarry Post Office (historical) | Monroe | 784 | Rinard Mills |
| Rich Fork Post Office (historical) | Rich Fork Post Office (historical) | Monroe | Unknown | |
| Sardis Post Office | Sardis Post Office | Monroe | 666 | Paden City |
| Sprague Post Office (historical) | Sprague Post Office (historical) | Monroe | 1102 | Graysville |
| Stafford Post Office | Stafford Post Office | Monroe | 1089 | Stafford |
| Swazey Post Office (historical) | Swazey Post Office (historical) | Monroe | 925 | Summerfield |
| Switzer Post Office (historical) | Switzer Post Office (historical) | Monroe | 1250 | Cameron |
| Sycamore Valley Post Office | Sycamore Valley Post Office | Monroe | 804 | Graysville |
| Twilight Post Office (historical) | Twilight Post Office (historical) | Monroe | Unknown | |
| Wanamaker Post Office (historical) | Wanamaker Post Office (historical) | Monroe | Unknown | |
| Way Post Office (historical) | Way Post Office (historical) | Monroe | 1040 | Graysville |
| Westons Post Office (historical) | Westons Post Office (historical) | Monroe | Unknown | |
| Wittens Post Office (historical) | Wittens Post Office (historical) | Monroe | 636 | Paden City |
| Youngs Mills Post Office (historical) | Youngs Mills Post Office (historical) | Monroe | Unknown | |
| Amity Post Office (historical) | Amity Post Office (historical) | Montgomery | 984 | Trotwood |
| Bear Creek Post Office (historical) | Bear Creek Post Office (historical) | Montgomery | Unknown | |
| Carrollton Station Post Office (historical) | Carrollton Station Post Office (historical) | Montgomery | Unknown | |
| Chautauqua Post Office (historical) | Chautauqua Post Office (historical) | Montgomery | 696 | Franklin |
| Davidson Post Office (historical) | Davidson Post Office (historical) | Montgomery | Unknown | |
| Dayton Post Office | Dayton Post Office | Montgomery | 738 | Dayton North |
| Dean Post Office (historical) | Dean Post Office (historical) | Montgomery | Unknown | |
| Dodson Post Office (historical) | Dodson Post Office (historical) | Montgomery | 1047 | Brookville |
| Ellerton Post Office (historical) | Ellerton Post Office (historical) | Montgomery | 738 | Miamisburg |
| Farmersville Post Office (historical) | Farmersville Post Office (historical) | Montgomery | 873 | Farmersville |
| Fishburgh Post Office (historical) | Fishburgh Post Office (historical) | Montgomery | Unknown | |
| Germantown Post Office | Germantown Post Office | Montgomery | 718 | Miamisburg |
| Hays Store Post Office (historical) | Hays Store Post Office (historical) | Montgomery | Unknown | |
| Henby Post Office (historical) | Henby Post Office (historical) | Montgomery | Unknown | |
| Higgins Mills Post Office (historical) | Higgins Mills Post Office (historical) | Montgomery | Unknown | |
| Industry Post Office (historical) | Industry Post Office (historical) | Montgomery | Unknown | |
| Johnsville Post Office (historical) | Johnsville Post Office (historical) | Montgomery | 968 | Farmersville |
| Liberty Post Office (historical) | Liberty Post Office (historical) | Montgomery | 830 | Miamisburg |
| Miami City Post Office (historical) | Miami City Post Office (historical) | Montgomery | Unknown | |
| Mummaville Post Office (historical) | Mummaville Post Office (historical) | Montgomery | Unknown | |
| Priggs Post Office (historical) | Priggs Post Office (historical) | Montgomery | Unknown | |
| Pyrmont Post Office (historical) | Pyrmont Post Office (historical) | Montgomery | 1050 | Brookville |
| Spanker Post Office (historical) | Spanker Post Office (historical) | Montgomery | 902 | Dayton North |
| Taylorsville Post Office (historical) | Taylorsville Post Office (historical) | Montgomery | 768 | Dayton North |
| Trotwood Post Office (historical) | Trotwood Post Office (historical) | Montgomery | 833 | Trotwood |
| Union Post Office (historical) | Union Post Office (historical) | Montgomery | 925 | West Milton |
| Agins Post Office (historical) | Agins Post Office (historical) | Monroe | Unknown | |
| Alexandersville Post Office (historical) | Alexandersville Post Office (historical) | Montgomery | Unknown | |
| BoetIa Post Office (historical) | BoetIa Post Office (historical) | Mercer | Unknown | |
| Brownrun Post Office (historical) | Brownrun Post Office (historical) | Montgomery | Unknown | |
| Closey Post Office (historical) | Closey Post Office (historical) | Montgomery | Unknown | |
| Clyde Post Office (historical) | Clyde Post Office (historical) | Mercer | Unknown | |
| Bachman Post Office (historical) | Bachman Post Office (historical) | Montgomery | 1047 | Brookville |
| Centerville Post Office (historical) | Centerville Post Office (historical) | Montgomery | 1014 | Dayton South |
| Chambersburg Post Office (historical) | Chambersburg Post Office (historical) | Montgomery | Unknown | |
| Sulphurgrove Post Office (historical) | Sulphurgrove Post Office (historical) | Montgomery | 984 | Fairborn |
| Tadmor Post Office (historical) | Tadmor Post Office (historical) | Montgomery | 817 | Tipp City |
| Taylorsburg Post Office (historical) | Taylorsburg Post Office (historical) | Montgomery | 928 | Trotwood |
| Corwin Post Office (historical) | Corwin Post Office (historical) | Montgomery | Unknown | |
| Kinsey Post Office (historical) | Kinsey Post Office (historical) | Montgomery | 961 | Trotwood |
| Littleyork Post Office (historical) | Littleyork Post Office (historical) | Montgomery | 827 | Trotwood |
| National Military Home Post Office (historical) | National Military Home Post Office (historical) | Montgomery | Unknown | |
| Voorhees Post Office (historical) | Voorhees Post Office (historical) | Montgomery | Unknown | |
| New Lebanon Post Office | New Lebanon Post Office | Montgomery | 909 | Farmersville |
| Phillipsburg Post Office | Phillipsburg Post Office | Montgomery | 1033 | Laura |
| Vandalia Post Office | Vandalia Post Office | Montgomery | 991 | Tipp City |
| Stockport Post Office | Stockport Post Office | Morgan | 696 | Stockport |
| Wengerlawn Post Office (historical) | Wengerlawn Post Office (historical) | Montgomery | 1047 | Brookville |
| Centerbend Post Office (historical) | Centerbend Post Office (historical) | Morgan | 666 | Beverly |
| Dyesville Post Office (historical) | Dyesville Post Office (historical) | Morgan | Unknown | |
| Eagleport Post Office (historical) | Eagleport Post Office (historical) | Morgan | 663 | Rokeby Lock |
| Elliott Post Office (historical) | Elliott Post Office (historical) | Morgan | 1033 | Ringgold |
| Hooksburg Post Office (historical) | Hooksburg Post Office (historical) | Morgan | 663 | Stockport |
| Joy Post Office (historical) | Joy Post Office (historical) | Morgan | 659 | Amesville |
| Mountville Post Office (historical) | Mountville Post Office (historical) | Morgan | 1001 | Ringgold |
| Ringgold Post Office (historical) | Ringgold Post Office (historical) | Morgan | 909 | Stockport |
| Ludlow Post Office (historical) | Ludlow Post Office (historical) | Morgan | Unknown | |
| Meigs Post Office (historical) | Meigs Post Office (historical) | Morgan | 738 | McConnelsville |
| Millgrove Post Office (historical) | Millgrove Post Office (historical) | Morgan | 643 | Beverly |
| Chesterhill Post Office | Chesterhill Post Office | Morgan | 955 | Chesterhill |
| Bishopville Post Office (historical) | Bishopville Post Office (historical) | Morgan | 814 | Corning |
| Blackburn Post Office (historical) | Blackburn Post Office (historical) | Morgan | Unknown | |
| Brill Post Office (historical) | Brill Post Office (historical) | Morgan | 981 | Reinersville |
| Bristol Post Office (historical) | Bristol Post Office (historical) | Morgan | 919 | Reinersville |
| Brokaw Post Office (historical) | Brokaw Post Office (historical) | Morgan | 659 | Beverly |
| Calvary Post Office (historical) | Calvary Post Office (historical) | Morgan | Unknown | |
| Cheneyville Post Office (historical) | Cheneyville Post Office (historical) | Morgan | 978 | Ringgold |
| Cloud Post Office (historical) | Cloud Post Office (historical) | Morgan | 761 | McConnelsville |
| Deavertown Post Office (historical) | Deavertown Post Office (historical) | Morgan | 942 | Deavertown |
| Durant Post Office (historical) | Durant Post Office (historical) | Morgan | 673 | Philo |
| Farley Post Office (historical) | Farley Post Office (historical) | Morgan | Unknown | |
| Fisherville Post Office (historical) | Fisherville Post Office (historical) | Morgan | Unknown | |
| Hackney Post Office (historical) | Hackney Post Office (historical) | Morgan | 899 | Reinersville |
| Halls Valley Post Office (historical) | Halls Valley Post Office (historical) | Morgan | 896 | Rokeby Lock |
| Hickersons Cross Roads Post Office (historical) | Hickersons Cross Roads Post Office (historical) | Morgan | Unknown | |
| Hoskinsville Post Office (historical) | Hoskinsville Post Office (historical) | Morgan | Unknown | |
| Huffmans Post Office (historical) | Huffmans Post Office (historical) | Morgan | Unknown | |
| Lewis Post Office (historical) | Lewis Post Office (historical) | Morgan | 856 | Jacksonville |
| Meigsville Post Office (historical) | Meigsville Post Office (historical) | Morgan | Unknown | |
| Moodys Mills Post Office (historical) | Moodys Mills Post Office (historical) | Morgan | Unknown | |
| Moscow Mills Post Office (historical) | Moscow Mills Post Office (historical) | Morgan | 643 | Beverly |
| Neelysville Post Office (historical) | Neelysville Post Office (historical) | Morgan | 984 | McConnelsville |
| Oscar Post Office (historical) | Oscar Post Office (historical) | Morgan | Unknown | |
| Otho Post Office (historical) | Otho Post Office (historical) | Morgan | 725 | Reinersville |
| Parrish's Mills Post Office (historical) | Parrish's Mills Post Office (historical) | Morgan | Unknown | |
| Pennsville Post Office | Pennsville Post Office | Morgan | 994 | Stockport |
| Plantsville Post Office (historical) | Plantsville Post Office (historical) | Morgan | 935 | Amesville |
| Rokeby Lock Post Office (historical) | Rokeby Lock Post Office (historical) | Morgan | 686 | Rokeby Lock |
| Rose Farm Post Office (historical) | Rose Farm Post Office (historical) | Morgan | 768 | Deavertown |
| Rosseau Post Office (historical) | Rosseau Post Office (historical) | Morgan | 791 | Ringgold |
| Rowland Post Office (historical) | Rowland Post Office (historical) | Morgan | 712 | McConnelsville |
| Roxbury Post Office (historical) | Roxbury Post Office (historical) | Morgan | 692 | Beverly |
| Sand Hollow Post Office (historical) | Sand Hollow Post Office (historical) | Morgan | Unknown | |
| Shilling Post Office (historical) | Shilling Post Office (historical) | Morgan | 1060 | Ringgold |
| Shinn Post Office (historical) | Shinn Post Office (historical) | Morgan | Unknown | |
| Stubbs Post Office (historical) | Stubbs Post Office (historical) | Morgan | Unknown | |
| Tallytown Post Office (historical) | Tallytown Post Office (historical) | Morgan | Unknown | |
| Taylors Post Office (historical) | Taylors Post Office (historical) | Morgan | Unknown | |
| Todds Post Office (historical) | Todds Post Office (historical) | Morgan | 981 | Stockport |
| Triadelphia Post Office (historical) | Triadelphia Post Office (historical) | Morgan | 1017 | Rokeby Lock |
| Westland Post Office (historical) | Westland Post Office (historical) | Morgan | 1001 | Ringgold |
| Wolf Creek Post Office (historical) | Wolf Creek Post Office (historical) | Morgan | Unknown | |
| Bennington Post Office (historical) | Bennington Post Office (historical) | Morrow | Unknown | |
| Bloomfield Post Office (historical) | Bloomfield Post Office (historical) | Morrow | 1309 | Centerburg |
| Burn's Corners Post Office (historical) | Burn's Corners Post Office (historical) | Morrow | Unknown | |
| Cardington Post Office | Cardington Post Office | Morrow | 994 | Denmark |
| Climx Post Office (historical) | Climx Post Office (historical) | Morrow | 1033 | Caledonia |
| Corsica Post Office (historical) | Corsica Post Office (historical) | Morrow | Unknown | |
| Fargo Post Office (historical) | Fargo Post Office (historical) | Morrow | 1076 | Olive Green |
| Fulton Post Office | Fulton Post Office | Morrow | 1106 | Marengo |
| Grays Corners Post Office (historical) | Grays Corners Post Office (historical) | Morrow | Unknown | |
| Iberia Post Office | Iberia Post Office | Morrow | 1079 | Galion |
| Indigo Post Office (historical) | Indigo Post Office (historical) | Morrow | Unknown | |
| Kelker Post Office (historical) | Kelker Post Office (historical) | Morrow | 1348 | Shauck |
| Knapp Post Office (historical) | Knapp Post Office (historical) | Morrow | Unknown | |
| Lincoln Post Office (historical) | Lincoln Post Office (historical) | Morrow | Unknown | |
| Marengo Post Office | Marengo Post Office | Morrow | 1158 | Marengo |
| Marits Post Office (historical) | Marits Post Office (historical) | Morrow | Unknown | |
| McEwens Cross Roads Post Office (historical) | McEwens Cross Roads Post Office (historical) | Morrow | Unknown | |
| Penlan Post Office (historical) | Penlan Post Office (historical) | Morrow | Unknown | |
| Pulaskiville Post Office (historical) | Pulaskiville Post Office (historical) | Morrow | 1332 | Shauck |
| Smailes Post Office (historical) | Smailes Post Office (historical) | Morrow | Unknown | |
| Smiths Mills Post Office (historical) | Smiths Mills Post Office (historical) | Morrow | Unknown | |
| Stantontown Post Office (historical) | Stantontown Post Office (historical) | Morrow | Unknown | |
| Surprise Post Office (historical) | Surprise Post Office (historical) | Morrow | 1109 | Mount Gilead |
| Vail's Cross Roads Post Office (historical) | Vail's Cross Roads Post Office (historical) | Morrow | Unknown | |
| Westfield Post Office (historical) | Westfield Post Office (historical) | Morrow | 958 | Ashley |
| Whetstone Post Office (historical) | Whetstone Post Office (historical) | Morrow | Unknown | |
| Woodview Post Office (historical) | Woodview Post Office (historical) | Morrow | Unknown | |
| Adams Mills Post Office | Adams Mills Post Office | Muskingum | 735 | Conesville |
| Blue Rock Post Office | Blue Rock Post Office | Muskingum | 699 | Philo |
| Dresden Post Office | Dresden Post Office | Muskingum | 745 | Dresden |
| Fultonham Post Office | Fultonham Post Office | Muskingum | 997 | Fultonham |
| Hopewell Post Office | Hopewell Post Office | Muskingum | 1083 | Gratiot |
| Nashport Post Office | Nashport Post Office | Muskingum | 820 | Toboso |
| New Concord Post Office | New Concord Post Office | Muskingum | 860 | New Concord |
| Philo Post Office | Philo Post Office | Muskingum | 718 | Philo |
| Roseville Post Office | Roseville Post Office | Muskingum | 728 | Crooksville |
| Sonora Post Office | Sonora Post Office | Muskingum | 810 | Zanesville East |
| Trinway Post Office | Trinway Post Office | Muskingum | 735 | Trinway |
| Reinersville Post Office | Reinersville Post Office | Morgan | 968 | Reinersville |
| Edison Post Office | Edison Post Office | Morrow | 1063 | Mount Gilead |
| Mount Gilead Post Office | Mount Gilead Post Office | Morrow | 1129 | Mount Gilead |
| Shauck Post Office | Shauck Post Office | Morrow | 1352 | Shauck |
| Morgansville Post Office (historical) | Morgansville Post Office (historical) | Morgan | 883 | Rokeby Lock |
| Woodgrove Post Office (historical) | Woodgrove Post Office (historical) | Morgan | Unknown | |
| Chesterville Post Office | Chesterville Post Office | Morrow | 1155 | Chesterville |
| Saint James Post Office (historical) | Saint James Post Office (historical) | Morrow | 1152 | Galion |
| Steam Corners Post Office (historical) | Steam Corners Post Office (historical) | Morrow | 1411 | Blooming Grove |
| Pagetown Post Office (historical) | Pagetown Post Office (historical) | Morrow | 1099 | Olive Green |
| Blackrun Post Office (historical) | Blackrun Post Office (historical) | Muskingum | Unknown | |
| Stovertown Post Office (historical) | Stovertown Post Office (historical) | Muskingum | 722 | Philo |
| Cedarrun Post Office (historical) | Cedarrun Post Office (historical) | Muskingum | 663 | Philo |
| Keifer Post Office (historical) | Keifer Post Office (historical) | Muskingum | Unknown | |
| Ellis Post Office (historical) | Ellis Post Office (historical) | Muskingum | 745 | Adamsville |
| Forks of the Muskingum Post Office (historical) | Forks of the Muskingum Post Office (historical) | Muskingum | Unknown | |
| Freeland Post Office (historical) | Freeland Post Office (historical) | Muskingum | 764 | Norwich |
| Freelands Post Office (historical) | Freelands Post Office (historical) | Muskingum | Unknown | |
| Gays Port Post Office (historical) | Gays Port Post Office (historical) | Muskingum | Unknown | |
| Gaysport Post Office (historical) | Gaysport Post Office (historical) | Muskingum | 696 | Philo |
| Gilbert Post Office (historical) | Gilbert Post Office (historical) | Muskingum | 748 | Adamsville |
| High Hill Post Office (historical) | High Hill Post Office (historical) | Muskingum | 1207 | Ruraldale |
| Hotard Post Office (historical) | Hotard Post Office (historical) | Muskingum | Unknown | |
| Ironsport Post Office (historical) | Ironsport Post Office (historical) | Muskingum | Unknown | |
| Irville Post Office (historical) | Irville Post Office (historical) | Muskingum | 797 | Toboso |
| Kings Post Office (historical) | Kings Post Office (historical) | Muskingum | Unknown | |
| Knight Post Office (historical) | Knight Post Office (historical) | Muskingum | Unknown | |
| Laurel Rock Post Office (historical) | Laurel Rock Post Office (historical) | Muskingum | Unknown | |
| Lawton Post Office (historical) | Lawton Post Office (historical) | Muskingum | 709 | Norwich |
| Frazeysburg Post Office | Frazeysburg Post Office | Muskingum | 755 | Dresden |
| Norwich Post Office | Norwich Post Office | Muskingum | 958 | Norwich |
| White Cottage Post Office | White Cottage Post Office | Muskingum | 718 | Crooksville |
| Adamsville Post Office | Adamsville Post Office | Muskingum | 1014 | Adamsville |
| Chandersville Post Office | Chandersville Post Office | Muskingum | 738 | Norwich |
| Duncan Falls Post Office | Duncan Falls Post Office | Muskingum | 702 | Philo |
| East Fultonham Post Office | East Fultonham Post Office | Muskingum | 768 | Crooksville |
| Abbotts Post Office (historical) | Abbotts Post Office (historical) | Muskingum | Unknown | |
| Ark Spring Post Office (historical) | Ark Spring Post Office (historical) | Muskingum | Unknown | |
| Baxters Post Office (historical) | Baxters Post Office (historical) | Muskingum | Unknown | |
| Border City Post Office (historical) | Border City Post Office (historical) | Muskingum | Unknown | |
| Carlos Post Office (historical) | Carlos Post Office (historical) | Muskingum | Unknown | |
| Carlwick Post Office (historical) | Carlwick Post Office (historical) | Muskingum | 761 | Zanesville East |
| Coaldale Post Office (historical) | Coaldale Post Office (historical) | Muskingum | Unknown | |
| Coal Dale Post Office (historical) | Coal Dale Post Office (historical) | Muskingum | Unknown | |
| East Greenwood Post Office (historical) | East Greenwood Post Office (historical) | Muskingum | 984 | Adamsville |
| Ferncliff Post Office (historical) | Ferncliff Post Office (historical) | Muskingum | 1076 | Otsego |
| Hendricks Post Office (historical) | Hendricks Post Office (historical) | Muskingum | Unknown | |
| Marguand Post Office (historical) | Marguand Post Office (historical) | Muskingum | Unknown | |
| McDonald post office (historical) | McDonald post office (historical) | Muskingum | 738 | Ruraldale |
| Meadow Farm Post Office (historical) | Meadow Farm Post Office (historical) | Muskingum | 804 | Zanesville West |
| Meroz Post Office (historical) | Meroz Post Office (historical) | Muskingum | Unknown | |
| Moulton Post Office (historical) | Moulton Post Office (historical) | Muskingum | Unknown | |
| Muse Post Office (historical) | Muse Post Office (historical) | Muskingum | Unknown | |
| Museville Post Office (historical) | Museville Post Office (historical) | Muskingum | 745 | Ruraldale |
| Muskingum Post Office (historical) | Muskingum Post Office (historical) | Muskingum | 764 | Cheshire |
| Muskingum Valley Post Office (historical) | Muskingum Valley Post Office (historical) | Muskingum | Unknown | |
| Newton Post Office (historical) | Newton Post Office (historical) | Muskingum | Unknown | |
| Opera Post Office (historical) | Opera Post Office (historical) | Muskingum | 988 | Gratiot |
| Otho Post Office (historical) | Otho Post Office (historical) | Muskingum | Unknown | |
| Rich Hill Post Office (historical) | Rich Hill Post Office (historical) | Muskingum | 1089 | Norwich |
| Ridgefield Post Office (historical) | Ridgefield Post Office (historical) | Muskingum | Unknown | |
| Ridgeway Post Office (historical) | Ridgeway Post Office (historical) | Muskingum | Unknown | |
| Sago Post Office (historical) | Sago Post Office (historical) | Muskingum | Unknown | |
| Saintfield Post Office (historical) | Saintfield Post Office (historical) | Muskingum | Unknown | |
| Saltcreek Post Office (historical) | Saltcreek Post Office (historical) | Muskingum | Unknown | |
| Salt Creek Bridge Post Office (historical) | Salt Creek Bridge Post Office (historical) | Muskingum | Unknown | |
| Andrews Post Office (historical) | Andrews Post Office (historical) | Morrow | Unknown | |
| Trowbridge Post Office (historical) | Trowbridge Post Office (historical) | Ottawa | 584 | Genoa |
| Charloe Post Office (historical) | Charloe Post Office (historical) | Paulding | 712 | Junction |
| Hiramsburg Post Office (historical) | Hiramsburg Post Office (historical) | Noble | 958 | Caldwell North |
| Keith Post Office (historical) | Keith Post Office (historical) | Noble | 745 | Caldwell South |
| Kennonsburg Post Office (historical) | Kennonsburg Post Office (historical) | Noble | 896 | Senecaville |
| Claytona Post Office (historical) | Claytona Post Office (historical) | Noble | Unknown | |
| Crookedtree Post Office (historical) | Crookedtree Post Office (historical) | Noble | 1060 | Macksburg |
| Fredericksdale Post Office (historical) | Fredericksdale Post Office (historical) | Noble | 892 | Sarahsville |
| Mount Zion Post Office (historical) | Mount Zion Post Office (historical) | Noble | 1033 | Caldwell North |
| Crooks Mills Post Office (historical) | Crooks Mills Post Office (historical) | Muskingum | Unknown | |
| Dillon Post Office (historical) | Dillon Post Office (historical) | Muskingum | Unknown | |
| Cannelville Post Office (historical) | Cannelville Post Office (historical) | Muskingum | 755 | Philo |
| Bridgeville Post Office (historical) | Bridgeville Post Office (historical) | Muskingum | 853 | Norwich |
| Putnam Post Office (historical) | Putnam Post Office (historical) | Muskingum | 705 | Zanesville West |
| Rix Mills Post Office (historical) | Rix Mills Post Office (historical) | Muskingum | 1093 | New Concord |
| Ruraldale Post Office (historical) | Ruraldale Post Office (historical) | Muskingum | 1079 | Ruraldale |
| Sun Dale Post Office (historical) | Sun Dale Post Office (historical) | Muskingum | 896 | Norwich |
| Cottagehill Post Office (historical) | Cottagehill Post Office (historical) | Muskingum | 876 | Toboso |
| Otsego Post Office (historical) | Otsego Post Office (historical) | Muskingum | 814 | Otsego |
| Pleasant Valley Post Office (historical) | Pleasant Valley Post Office (historical) | Muskingum | 735 | Toboso |
| Provident Post Office (historical) | Provident Post Office (historical) | Muskingum | Unknown | |
| Sealover Post Office (historical) | Sealover Post Office (historical) | Noble | 689 | Philo |
| Sealover Post Office (historical) | Sealover Post Office (historical) | Muskingum | 689 | Philo |
| Shannon Post Office (historical) | Shannon Post Office (historical) | Muskingum | 823 | Dresden |
| Sims Valley Post Office (historical) | Sims Valley Post Office (historical) | Muskingum | Unknown | |
| South Zanesville Post Office | South Zanesville Post Office | Muskingum | Unknown | |
| Spratt Post Office (historical) | Spratt Post Office (historical) | Muskingum | 955 | Cumberland |
| Stovertown Post Office (historical) | Stovertown Post Office (historical) | Muskingum | Unknown | |
| Symmes Creek Post Office (historical) | Symmes Creek Post Office (historical) | Muskingum | Unknown | |
| Tarsus Post Office (historical) | Tarsus Post Office (historical) | Muskingum | Unknown | |
| Timber Run Post Office (historical) | Timber Run Post Office (historical) | Muskingum | Unknown | |
| Walkers Store Post Office (historical) | Walkers Store Post Office (historical) | Muskingum | Unknown | |
| West Zanesville Post Office (historical) | West Zanesville Post Office (historical) | Muskingum | 696 | Zanesville West |
| Young Hickory Post Office (historical) | Young Hickory Post Office (historical) | Muskingum | 1142 | Cumberland |
| Zanesfield Post Office (historical) | Zanesfield Post Office (historical) | Muskingum | Unknown | |
| Zeno Post Office (historical) | Zeno Post Office (historical) | Muskingum | 1122 | Cumberland |
| Ashton Post Office (historical) | Ashton Post Office (historical) | Noble | 781 | Macksburg |
| Billings Post Office (historical) | Billings Post Office (historical) | Noble | Unknown | |
| Brookton Post Office (historical) | Brookton Post Office (historical) | Noble | Unknown | |
| ChasevillePost Office (historical) | ChasevillePost Office (historical) | Noble | 1004 | Senecaville |
| Cliffyville Post Office (historical) | Cliffyville Post Office (historical) | Noble | 1063 | Stafford |
| Coalridge Post Office (historical) | Coalridge Post Office (historical) | Noble | 755 | Caldwell North |
| Dudley Post Office (historical) | Dudley Post Office (historical) | Noble | 774 | Caldwell South |
| Elk Post Office (historical) | Elk Post Office (historical) | Noble | 712 | Stafford |
| Enoch Post Office (historical) | Enoch Post Office (historical) | Noble | Unknown | |
| Everly Post Office (historical) | Everly Post Office (historical) | Noble | Unknown | |
| Flag Post Office (historical) | Flag Post Office (historical) | Noble | 718 | Stafford |
| Fulda Post Office (historical) | Fulda Post Office (historical) | Noble | 1138 | Macksburg |
| Gardner Post Office (historical) | Gardner Post Office (historical) | Noble | Unknown | |
| Gem Post Office (historical) | Gem Post Office (historical) | Noble | 820 | Macksburg |
| Glenwood Post Office (historical) | Glenwood Post Office (historical) | Noble | 866 | Caldwell North |
| Haga Post Office (historical) | Haga Post Office (historical) | Noble | Unknown | |
| Harriettsville Post Office (historical) | Harriettsville Post Office (historical) | Noble | 692 | Stafford |
| Hemp Post Office (historical) | Hemp Post Office (historical) | Noble | Unknown | |
| Honesty Post Office (historical) | Honesty Post Office (historical) | Noble | 801 | Lower Salem |
| Hoskinsville Post Office (historical) | Hoskinsville Post Office (historical) | Noble | 781 | Caldwell North |
| Johnsons Mills Post Office (historical) | Johnsons Mills Post Office (historical) | Noble | Unknown | |
| Kilmer Post Office (historical) | Kilmer Post Office (historical) | Noble | 725 | Lower Salem |
| Klondyke Post Office (historical) | Klondyke Post Office (historical) | Noble | Unknown | |
| Leeds Post Office (historical) | Leeds Post Office (historical) | Noble | Unknown | |
| McCleary Post Office (historical) | McCleary Post Office (historical) | Noble | Unknown | |
| Mount Ephraim Post Office (historical) | Mount Ephraim Post Office (historical) | Noble | 1138 | Sarahsville |
| Noble Post Office (historical) | Noble Post Office (historical) | Noble | Unknown | |
| Nobleville Post Office (historical) | Nobleville Post Office (historical) | Noble | Unknown | |
| Olive Post Office (historical) | Olive Post Office (historical) | Noble | Unknown | |
| Perryopolis Post Office (historical) | Perryopolis Post Office (historical) | Noble | Unknown | |
| Rado Post Office (historical) | Rado Post Office (historical) | Noble | 1073 | Macksburg |
| Renrock Post Office (historical) | Renrock Post Office (historical) | Noble | 791 | Cumberland |
| Rich Valley Post Office (historical) | Rich Valley Post Office (historical) | Noble | 732 | Caldwell South |
| Ridge Post Office (historical) | Ridge Post Office (historical) | Noble | Unknown | |
| Salt Run Post Office (historical) | Salt Run Post Office (historical) | Noble | Unknown | |
| Soakum Post Office (historical) | Soakum Post Office (historical) | Noble | Unknown | |
| Whartons Post Office (historical) | Whartons Post Office (historical) | Noble | Unknown | |
| Whigville Post Office (historical) | Whigville Post Office (historical) | Noble | 1181 | Summerfield |
| Ava Post Office | Ava Post Office | Noble | 774 | Caldwell North |
| Batesville Post Office | Batesville Post Office | Noble | 919 | Quaker City |
| Caldwell Post Office | Caldwell Post Office | Noble | 745 | Caldwell South |
| Dexter City Post Office | Dexter City Post Office | Noble | 712 | Macksburg |
| Sharon Post Office | Sharon Post Office | Noble | 981 | Caldwell South |
| Summerfield Post Office | Summerfield Post Office | Noble | 1197 | Summerfield |
| Catawba Island Post Office | Catawba Island Post Office | Ottawa | 587 | Gypsum |
| Danbury Post Office | Danbury Post Office | Ottawa | 577 | Castalia |
| Frenchtown Post Office (historical) | Frenchtown Post Office (historical) | Ottawa | Unknown | |
| Germanville Post Office (historical) | Germanville Post Office (historical) | Noble | Unknown | |
| Hinelilne Post Office (historical) | Hinelilne Post Office (historical) | Ottawa | Unknown | |
| Johnsons Island Post Office (historical) | Johnsons Island Post Office (historical) | Ottawa | Unknown | |
| Marblehead Post Office (historical) | Marblehead Post Office (historical) | Ottawa | 623 | Kelleys Island |
| Nina Post Office (historical) | Nina Post Office (historical) | Ottawa | Unknown | |
| Ottawa City Post Office (historical) | Ottawa City Post Office (historical) | Ottawa | Unknown | |
| Peachton Post Office (historical) | Peachton Post Office (historical) | Ottawa | Unknown | |
| Piccolo Post Office (historical) | Piccolo Post Office (historical) | Ottawa | 581 | Gypsum |
| Rehburg Post Office (historical) | Rehburg Post Office (historical) | Ottawa | Unknown | |
| Velliquete Post Office (historical) | Velliquete Post Office (historical) | Ottawa | Unknown | |
| Vine Ridge Post Office (historical) | Vine Ridge Post Office (historical) | Ottawa | Unknown | |
| Williston Post Office | Williston Post Office | Ottawa | 597 | Genoa |
| Curtice Post Office | Curtice Post Office | Ottawa | 597 | Genoa |
| Elliston Post Office | Elliston Post Office | Ottawa | 597 | Genoa |
| Graytown Post Office | Graytown Post Office | Ottawa | 594 | Genoa |
| Gypsum Post Office | Gypsum Post Office | Ottawa | 584 | Vickery |
| Dague Post Office (historical) | Dague Post Office (historical) | Paulding | 728 | Latty |
| Roselms Post Office (historical) | Roselms Post Office (historical) | Paulding | 722 | Oakwood |
| Middlecreek Post Office (historical) | Middlecreek Post Office (historical) | Noble | Unknown | |
| Olivegreen Post Office (historical) | Olivegreen Post Office (historical) | Noble | 863 | Caldwell South |
| Limestone Post Office (historical) | Limestone Post Office (historical) | Ottawa | 591 | Oak Harbor |
| Toussaint Post Office (historical) | Toussaint Post Office (historical) | Noble | Unknown | |
| Belle Valley Post Office | Belle Valley Post Office | Noble | 745 | Caldwell North |
| Sarahsville Post Office | Sarahsville Post Office | Noble | 968 | Sarahsville |
| Martin Post Office | Martin Post Office | Ottawa | 604 | Genoa |
| Isle Saint George Post Office | Isle Saint George Post Office | Ottawa | 584 | Put-in-Bay |
| Lacarne Post Office | Lacarne Post Office | Ottawa | 574 | Lacarne |
| Melrose Post Office | Melrose Post Office | Paulding | 712 | Oakwood |
| Reid Post Office (historical) | Reid Post Office (historical) | Paulding | 718 | Paulding |
| Sunnyside Post Office (historical) | Sunnyside Post Office (historical) | Paulding | Unknown | |
| Berne Post Office (historical) | Berne Post Office (historical) | Noble | Unknown | |
| Arena Post Office (historical) | Arena Post Office (historical) | Paulding | 732 | Antwerp |
| Arthur Post Office (historical) | Arthur Post Office (historical) | Paulding | 718 | Ayersville |
| Batson Post Office (historical) | Batson Post Office (historical) | Paulding | 758 | Payne |
| Briceton Post Office (historical) | Briceton Post Office (historical) | Paulding | 738 | Payne |
| Broughton Post Office (historical) | Broughton Post Office (historical) | Paulding | 725 | Latty |
| Carryall Post Office (historical) | Carryall Post Office (historical) | Paulding | Unknown | |
| Cranesville Post Office (historical) | Cranesville Post Office (historical) | Paulding | Unknown | |
| Doylestown Post Office (historical) | Doylestown Post Office (historical) | Paulding | Unknown | |
| Emmett Post Office (historical) | Emmett Post Office (historical) | Paulding | 715 | Paulding |
| Follmer Post Office (historical) | Follmer Post Office (historical) | Paulding | 735 | Latty |
| Giauque Post Office (historical) | Giauque Post Office (historical) | Paulding | Unknown | |
| Hamer Post Office (historical) | Hamer Post Office (historical) | Paulding | Unknown | |
| Haviland Post Office | Haviland Post Office | Paulding | 735 | Latty |
| Hedges Post Office (historical) | Hedges Post Office (historical) | Paulding | 715 | Latty |
| Jacquette Post Office (historical) | Jacquette Post Office (historical) | Paulding | Unknown | |
| Junction Post Office (historical) | Junction Post Office (historical) | Paulding | 712 | Junction |
| Knoxdale Post Office (historical) | Knoxdale Post Office (historical) | Paulding | 725 | Antwerp |
| Link Post Office (historical) | Link Post Office (historical) | Paulding | 735 | Woodburn North |
| Mandale Post Office (historical) | Mandale Post Office (historical) | Paulding | 722 | Continental |
| McGill Post Office (historical) | McGill Post Office (historical) | Paulding | 761 | Woodburn South |
| Morrison Post Office (historical) | Morrison Post Office (historical) | Paulding | Unknown | |
| Smiley Post Office (historical) | Smiley Post Office (historical) | Paulding | 755 | Woodburn South |
| Sophia Post Office (historical) | Sophia Post Office (historical) | Paulding | 751 | Payne |
| Timberville Post Office (historical) | Timberville Post Office (historical) | Paulding | 712 | Oakwood |
| Tipton Post Office (historical) | Tipton Post Office (historical) | Paulding | 748 | Payne |
| WorstvillePost Office (historical) | WorstvillePost Office (historical) | Paulding | 738 | Payne |
| Asbury Post Office (historical) | Asbury Post Office (historical) | Perry | 984 | Junction City |
| Avlon Post Office (historical) | Avlon Post Office (historical) | Perry | 974 | Bremen |
| Bristol Post Office (historical) | Bristol Post Office (historical) | Perry | 1050 | New Lexington |
| Bruno Post Office (historical) | Bruno Post Office (historical) | Perry | 1070 | Rushville |
| Carrington Post Office (historical) | Carrington Post Office (historical) | Perry | 774 | New Straitsville |
| Carthon Post Office (historical) | Carthon Post Office (historical) | Perry | 817 | Junction City |
| Chalfonts Post Office (historical) | Chalfonts Post Office (historical) | Perry | 843 | Somerset |
| Chapel Hill Post Office (historical) | Chapel Hill Post Office (historical) | Perry | 1043 | Corning |
| Claybank Post Office (historical) | Claybank Post Office (historical) | Perry | 866 | New Lexington |
| Comley Post Office (historical) | Comley Post Office (historical) | Perry | Unknown | |
| Congo Post Office (historical) | Congo Post Office (historical) | Perry | 906 | Corning |
| Crossanville Post Office (historical) | Crossanville Post Office (historical) | Perry | Unknown | |
| Crossenville Post Office (historical) | Crossenville Post Office (historical) | Perry | 978 | Junction City |
| Daugherty Post Office (historical) | Daugherty Post Office (historical) | Perry | Unknown | |
| Dew Creek Post Office (historical) | Dew Creek Post Office (historical) | Perry | Unknown | |
| Dickson City Post Office (historical) | Dickson City Post Office (historical) | Perry | Unknown | |
| Dicksonton Post Office (historical) | Dicksonton Post Office (historical) | Perry | 850 | New Lexington |
| Dixie Post Office (historical) | Dixie Post Office (historical) | Perry | 846 | New Lexington |
| Hancock Post Office (historical) | Hancock Post Office (historical) | Perry | Unknown | |
| Hansleys Cross Roads Post Office (historical) | Hansleys Cross Roads Post Office (historical) | Perry | Unknown | |
| Hillis Post Office (historical) | Hillis Post Office (historical) | Perry | Unknown | |
| Iron Point Post Office (historical) | Iron Point Post Office (historical) | Perry | Unknown | |
| Lyonsdale Post Office (historical) | Lyonsdale Post Office (historical) | Perry | 873 | New Lexington |
| Maxville Post Office (historical) | Maxville Post Office (historical) | Perry | 784 | Gore |
| McCuneville Post Office (historical) | McCuneville Post Office (historical) | Perry | 820 | New Lexington |
| Milligan Post Office (historical) | Milligan Post Office (historical) | Perry | 761 | Deavertown |
| Misco Post Office (historical) | Misco Post Office (historical) | Perry | 797 | Deavertown |
| Pike Post Office (historical) | Pike Post Office (historical) | Perry | Unknown | |
| Portersville Post Office (historical) | Portersville Post Office (historical) | Perry | 1040 | Deavertown |
| Redfield Post Office (historical) | Redfield Post Office (historical) | Perry | 879 | Fultonham |
| Redington Post Office (historical) | Redington Post Office (historical) | Perry | Unknown | |
| Rehoboth Post Office (historical) | Rehoboth Post Office (historical) | Perry | 919 | New Lexington |
| Saint Josephs College Post Office (historical) | Saint Josephs College Post Office (historical) | Perry | Unknown | |
| Santoy Post Office (historical) | Santoy Post Office (historical) | Perry | 1024 | Deavertown |
| Sego Post Office (historical) | Sego Post Office (historical) | Perry | 833 | Fultonham |
| Sheldon Post Office (historical) | Sheldon Post Office (historical) | Perry | Unknown | |
| Straitsville Post Office (historical) | Straitsville Post Office (historical) | Perry | Unknown | |
| Thornport Post Office (historical) | Thornport Post Office (historical) | Perry | 896 | Thornville |
| Underwood Post Office (historical) | Underwood Post Office (historical) | Perry | Unknown | |
| Wesley Post Office (historical) | Wesley Post Office (historical) | Perry | 1033 | Fultonham |
| Worth Post Office (historical) | Worth Post Office (historical) | Perry | Unknown | |
| Yost Post Office (historical) | Yost Post Office (historical) | Perry | 856 | Glenford |
| Ziontown Post Office (historical) | Ziontown Post Office (historical) | Perry | 1099 | Somerset |
| Corning Post Office | Corning Post Office | Perry | 728 | Corning |
| Crooksville Post Office | Crooksville Post Office | Perry | Unknown | |
| Glenford Post Office | Glenford Post Office | Perry | 853 | Glenford |
| New Straitsville Post Office | New Straitsville Post Office | Perry | 794 | New Straitsville |
| Rendville Post Office | Rendville Post Office | Perry | 748 | Corning |
| Shawnee Post Office | Shawnee Post Office | Perry | 833 | New Straitsville |
| Somerset Post Office | Somerset Post Office | Perry | 1083 | Somerset |
| Hemlock Post Office | Hemlock Post Office | Perry | 761 | New Straitsville |
| Junction City Post Office | Junction City Post Office | Perry | 830 | Junction City |
| Mount Perry Post Office | Mount Perry Post Office | Perry | 843 | Gratiot |
| Thornville Post Office | Thornville Post Office | Perry | 1030 | Thornville |
| Ferrara Post Office (historical) | Ferrara Post Office (historical) | Perry | Unknown | |
| Saltillo Post Office (historical) | Saltillo Post Office (historical) | Perry | 850 | Fultonham |
| Sayre Post Office (historical) | Sayre Post Office (historical) | Perry | 843 | Deavertown |
| McLuney Post Office (historical) | McLuney Post Office (historical) | Perry | 810 | Deavertown |
| Ashville Post Office | Ashville Post Office | Pickaway | 712 | Ashville |
| Derby Post Office | Derby Post Office | Pickaway | 912 | Harrisburg |
| New Holland Post Office | New Holland Post Office | Pickaway | 853 | New Holland |
| Orient Post Office | Orient Post Office | Pickaway | 840 | Harrisburg |
| Tarlton Post Office | Tarlton Post Office | Pickaway | 899 | Stoutsville |
| Williamsport Post Office | Williamsport Post Office | Pickaway | 728 | Williamsport |
| Bliss Post Office (historical) | Bliss Post Office (historical) | Pickaway | Unknown | |
| Cosmopoli Post Office (historical) | Cosmopoli Post Office (historical) | Pickaway | Unknown | |
| Darbyville Post Office (historical) | Darbyville Post Office (historical) | Pickaway | 745 | Darbyville |
| Duvall Post Office (historical) | Duvall Post Office (historical) | Pickaway | 715 | Lockbourne |
| East Ringgold Post Office (historical) | East Ringgold Post Office (historical) | Pickaway | 965 | East Ringgold |
| Fox Post Office (historical) | Fox Post Office (historical) | Pickaway | 715 | Darbyville |
| Haysville Station Post Office (historical) | Haysville Station Post Office (historical) | Pickaway | Unknown | |
| Matville Post Office (historical) | Matville Post Office (historical) | Pickaway | 843 | Commercial Point |
| McCutchensville Post Office (historical) | McCutchensville Post Office (historical) | Pickaway | Unknown | |
| Nash Post Office (historical) | Nash Post Office (historical) | Pickaway | Unknown | |
| Pherson Post Office (historical) | Pherson Post Office (historical) | Pickaway | 784 | Darbyville |
| Pickaway Plains Post Office (historical) | Pickaway Plains Post Office (historical) | Pickaway | Unknown | |
| Robtown Post Office (historical) | Robtown Post Office (historical) | Pickaway | 784 | Darbyville |
| Saranac Post Office (historical) | Saranac Post Office (historical) | Pickaway | Unknown | |
| Teegardin Post Office (historical) | Teegardin Post Office (historical) | Pickaway | Unknown | |
| Thatcher Post Office (historical) | Thatcher Post Office (historical) | Pickaway | 856 | Circleville |
| Walnut Post Office (historical) | Walnut Post Office (historical) | Pickaway | 817 | East Ringgold |
| Whisler Post Office (historical) | Whisler Post Office (historical) | Pickaway | 820 | Hallsville |
| Woodlyn Post Office (historical) | Woodlyn Post Office (historical) | Pickaway | 755 | Williamsport |
| Arkoe Post Office (historical) | Arkoe Post Office (historical) | Pike | 696 | Latham |
| Beach Flat Post Office (historical) | Beach Flat Post Office (historical) | Pike | Unknown | |
| Bobo Post Office (historical) | Bobo Post Office (historical) | Pike | 659 | Waverly South |
| Byington Post Office (historical) | Byington Post Office (historical) | Pike | 676 | Byington |
| Camp Post Office (historical) | Camp Post Office (historical) | Pike | 623 | Wakefield |
| Cars Run Post Office (historical) | Cars Run Post Office (historical) | Pike | 722 | Beaver |
| Coopersville Post Office (historical) | Coopersville Post Office (historical) | Pike | 531 | Wakefield |
| Daleyville Post Office (historical) | Daleyville Post Office (historical) | Pike | 607 | Piketon |
| Dove Post Office (historical) | Dove Post Office (historical) | Pike | Unknown | |
| Germany Post Office (historical) | Germany Post Office (historical) | Pike | 646 | Waverly South |
| Hatch Post Office (historical) | Hatch Post Office (historical) | Pike | 1122 | Latham |
| Hayhollow Post Office (historical) | Hayhollow Post Office (historical) | Pike | Unknown | |
| Idaho Post Office (historical) | Idaho Post Office (historical) | Pike | 577 | Latham |
| Knisley of the Piketon Post Office. | Knisley of the Piketon Post Office. | Pike | Unknown | |
| Ladd Post Office (historical) | Ladd Post Office (historical) | Pike | 1079 | Rarden |
| Lapperell Post Office (historical) | Lapperell Post Office (historical) | Pike | 755 | Bainbridge |
| Linn Post Office (historical) | Linn Post Office (historical) | Pike | 784 | Beaver |
| Morgans Fork Post Office (historical) | Morgans Fork Post Office (historical) | Pike | Unknown | |
| Beaver Post Office | Beaver Post Office | Pike | 686 | Beaver |
| Cynthiana Post Office | Cynthiana Post Office | Pike | 971 | Bainbridge |
| Jasper Post Office | Jasper Post Office | Pike | 548 | Piketon |
| Latham Post Office | Latham Post Office | Pike | 630 | Latham |
| Moxahala Post Office | Moxahala Post Office | Perry | 814 | New Lexington |
| West Manchester Post Office | West Manchester Post Office | Preble | 1093 | New Madison |
| Eldorado Post Office | Eldorado Post Office | Preble | 1135 | New Madison |
| Bourneville Post Office | Bourneville Post Office | Ross | 679 | Bourneville |
| Ganges Post Office (historical) | Ganges Post Office (historical) | Richland | 1083 | Shiloh |
| Darlngton Post Office (historical) | Darlngton Post Office (historical) | Richland | 1342 | Bellville |
| Olivesburg Post Office (historical) | Olivesburg Post Office (historical) | Richland | 1070 | Olivesburg |
| Springmills Post Office | Springmills Post Office | Richland | 1138 | Shiloh |
| Bellville Post Office | Bellville Post Office | Richland | 1142 | Bellville |
| Ontario Post Office | Ontario Post Office | Richland | 1352 | Mansfield North |
| Shiloh Post Office | Shiloh Post Office | Richland | 1079 | Shiloh |
| Lucas Post Office | Lucas Post Office | Richland | 1089 | Lucas |
| Elm Center Post Office (historical) | Elm Center Post Office (historical) | Putnam | 738 | Ottawa |
| Franconia Post Office (historical) | Franconia Post Office (historical) | Putnam | 715 | Continental |
| Hartsburg Post Office (historical) | Hartsburg Post Office (historical) | Putnam | 718 | Continental |
| North Creek Post Office (historical) | North Creek Post Office (historical) | Putnam | 715 | New Bavaria |
| Cochrans Post Office (historical) | Cochrans Post Office (historical) | Putnam | Unknown | |
| Townwood Post Office | Townwood Post Office | Putnam | 741 | Leipsic |
| Pavonia Post Office (historical) | Pavonia Post Office (historical) | Putnam | 1086 | Pavonia |
| Crimson Post Office (historical) | Crimson Post Office (historical) | Putnam | 1220 | Lucas |
| Leipsic Post Office | Leipsic Post Office | Putnam | 764 | Leipsic |
| Columbus Grove Post Office | Columbus Grove Post Office | Putnam | 774 | Columbus Grove |
| Continental Post Office | Continental Post Office | Putnam | 722 | Continental |
| Cloverdale Post Office | Cloverdale Post Office | Putnam | 722 | Continental |
| Ottoville Post Office | Ottoville Post Office | Putnam | 741 | Ottoville |
| Pandora Post Office | Pandora Post Office | Putnam | 774 | Bluffton |
| Fruitdale Post Office (historical) | Fruitdale Post Office (historical) | Ross | 837 | South Salem |
| Denver Post Office (historical) | Denver Post Office (historical) | Ross | 830 | Summithill |
| Summithill Post Office | Summithill Post Office | Ross | 1079 | Summithill |
| Yellowbud Post Office (historical) | Yellowbud Post Office (historical) | Ross | 653 | Williamsport |
| Storms Post Office (historical) | Storms Post Office (historical) | Ross | 692 | Morgantown |
| Musselman Post Office | Musselman Post Office | Ross | 705 | Bourneville |
| Schooley Post Office (historical) | Schooley Post Office (historical) | Ross | 656 | Londonderry |
| Sciota Salt Springs Post Office (historical) | Sciota Salt Springs Post Office (historical) | Ross | Unknown | |
| Clarksburg Post Office | Clarksburg Post Office | Ross | 768 | Clarksburg |
| Frankfort Post Office | Frankfort Post Office | Ross | 738 | Frankfort |
| Londonderry Post Office | Londonderry Post Office | Ross | 686 | Londonderry |
| Lyndon Post Office | Lyndon Post Office | Ross | 902 | South Salem |
| Richmond Dale Post Office | Richmond Dale Post Office | Ross | 594 | Richmond Dale |
| South Bloomfield Post Office (historical) | South Bloomfield Post Office (historical) | Pickaway | 696 | Ashville |
| Leistville Post Office (historical) | Leistville Post Office (historical) | Pickaway | 863 | Stoutsville |
| Meade Post Office (historical) | Meade Post Office (historical) | Pickaway | 814 | Circleville |
| Deercreek Post Office (historical) | Deercreek Post Office (historical) | Pickaway | Unknown | |
| Era Post Office (historical) | Era Post Office (historical) | Pickaway | 892 | Five Points |
| Fivepoints Post Office (historical) | Fivepoints Post Office (historical) | Pickaway | 892 | Five Points |
| Nebraska Post Office (historical) | Nebraska Post Office (historical) | Pickaway | 728 | Ashville |
| Kinderhook Post Office (historical) | Kinderhook Post Office (historical) | Pickaway | 718 | Williamsport |
| Saint Paul Post Office (historical) | Saint Paul Post Office (historical) | Pickaway | 718 | Ashville |
| Stringtown Post Office (historical) | Stringtown Post Office (historical) | Pickaway | 820 | Stoutsville |
| Commercial Point Post Office | Commercial Point Post Office | Pickaway | 787 | Commercial Point |
| Atlanta Post Office | Atlanta Post Office | Pickaway | 837 | Clarksburg |
| Given Post Office (historical) | Given Post Office (historical) | Pike | 653 | Waverly South |
| Galford Post Office (historical) | Galford Post Office (historical) | Pike | Unknown | |
| Buchanan Post Office (historical) | Buchanan Post Office (historical) | Pike | 909 | Summithill |
| Poplargrove Post Office | Poplargrove Post Office | Pike | 1135 | Byington |
| Elm Grove Post Office | Elm Grove Post Office | Pike | 610 | Latham |
| Stockdale Post Office | Stockdale Post Office | Pike | 728 | Stockdale |
| Brinley Post Office (historical) | Brinley Post Office (historical) | Preble | 1119 | New Madison |
| Sugar Valley Post Office (historical) | Sugar Valley Post Office (historical) | Preble | 1099 | Eaton South |
| Euphemia Post Office (historical) | Euphemia Post Office (historical) | Preble | 981 | Lewisburg |
| Fairhaven Post Office (historical) | Fairhaven Post Office (historical) | Preble | 968 | Fairhaven |
| Camden Post Office | Camden Post Office | Preble | 837 | Eaton South |
| Lewisburg Post Office | Lewisburg Post Office | Preble | 1001 | Lewisburg |
| Verona Post Office | Verona Post Office | Preble | Unknown | |
| West Alexandria Post Office | West Alexandria Post Office | Preble | 892 | West Alexandria |
| Mahoning Post Office (historical) | Mahoning Post Office (historical) | Portage | 955 | Garrettsville |
| Streetsboro Post Office (historical) | Streetsboro Post Office (historical) | Portage | 1129 | Kent |
| Mantua Post Office (historical) | Mantua Post Office (historical) | Portage | Unknown | |
| Freedom Station Post Office (historical) | Freedom Station Post Office (historical) | Portage | 1148 | Ravenna |
| Geauga Lake Post Office (historical) | Geauga Lake Post Office (historical) | Portage | 1020 | Twinsburg |
| Edinburg Post Office (historical) | Edinburg Post Office (historical) | Portage | 1178 | Atwater |
| Wayland Post Office | Wayland Post Office | Portage | 951 | Windham |
| Aurora Post Office | Aurora Post Office | Portage | 1125 | Aurora |
| Atwater Post Office | Atwater Post Office | Portage | 1125 | Atwater |
| Mantua Post Office | Mantua Post Office | Portage | 1138 | Mantua |
| Kent Post Office | Kent Post Office | Portage | 1060 | Kent |
| Young Post Office (historical) | Young Post Office (historical) | Scioto | 600 | Rarden |
| Bearcreek Post Office (historical) | Bearcreek Post Office (historical) | Scioto | 607 | Wakefield |
| Buena Vista Post Office (historical) | Buena Vista Post Office (historical) | Scioto | 846 | Buena Vista |
| Dryrun Post Office (historical) | Dryrun Post Office (historical) | Scioto | 574 | West Portsmouth |
| Hales Creek Post Office (historical) | Hales Creek Post Office (historical) | Scioto | 643 | South Webster |
| Powellsville Post Office (historical) | Powellsville Post Office (historical) | Scioto | 561 | Wheelersburg |
| Lombardville Post Office (historical) | Lombardville Post Office (historical) | Scioto | 718 | Otway |
| Pondrun Post Office (historical) | Pondrun Post Office (historical) | Scioto | 551 | Pond Run |
| Slocums Station Post Office (historical) | Slocums Station Post Office (historical) | Scioto | Unknown | |
| Wait Post Office (historical) | Wait Post Office (historical) | Scioto | Unknown | |
| Abashai Post Office (historical) | Abashai Post Office (historical) | Scioto | Unknown | |
| Alexandria Post Office (historical) | Alexandria Post Office (historical) | Scioto | 525 | Friendship |
| American Post Office (historical) | American Post Office (historical) | Scioto | Unknown | |
| Crone Post Office (historical) | Crone Post Office (historical) | Scioto | Unknown | |
| Dennis Post Office (historical) | Dennis Post Office (historical) | Scioto | 525 | Friendship |
| Diffen Post Office (historical) | Diffen Post Office (historical) | Scioto | Unknown | |
| Duke Post Office (historical) | Duke Post Office (historical) | Scioto | 1227 | Rarden |
| Coles Ford Post Office (historical) | Coles Ford Post Office (historical) | Scioto | Unknown | |
| Comstock Post Office (historical) | Comstock Post Office (historical) | Scioto | Unknown | |
| Cooney Post Office (historical) | Cooney Post Office (historical) | Scioto | Unknown | |
| Crabtree Post Office (historical) | Crabtree Post Office (historical) | Scioto | 725 | Wakefield |
| Brushy Fork Post Office (historical) | Brushy Fork Post Office (historical) | Scioto | Unknown | |
| Burk Post Office (historical) | Burk Post Office (historical) | Scioto | Unknown | |
| Casata Post Office (historical) | Casata Post Office (historical) | Scioto | Unknown | |
| Clifford Post Office (historical) | Clifford Post Office (historical) | Scioto | 587 | Wakefield |
| Arion Post Office (historical) | Arion Post Office (historical) | Scioto | 607 | West Portsmouth |
| Bertha Post Office (historical) | Bertha Post Office (historical) | Scioto | Unknown | |
| Bloom Switch Post Office (historical) | Bloom Switch Post Office (historical) | Scioto | Unknown | |
| Bradford Post Office (historical) | Bradford Post Office (historical) | Scioto | Unknown | |
| Dunback Post Office (historical) | Dunback Post Office (historical) | Scioto | Unknown | |
| Eifort Post Office (historical) | Eifort Post Office (historical) | Scioto | 673 | South Webster |
| Freemans Post Office (historical) | Freemans Post Office (historical) | Scioto | Unknown | |
| French Post Office (historical) | French Post Office (historical) | Scioto | Unknown | |
| French Grant Post Office (historical) | French Grant Post Office (historical) | Scioto | Unknown | |
| George Post Office (historical) | George Post Office (historical) | Scioto | Unknown | |
| Gervais Post Office (historical) | Gervais Post Office (historical) | Scioto | Unknown | |
| Hanna Post Office (historical) | Hanna Post Office (historical) | Scioto | Unknown | |
| Harrison Mills Post Office (historical) | Harrison Mills Post Office (historical) | Scioto | 577 | Minford |
| Henly Post Office (historical) | Henly Post Office (historical) | Scioto | Unknown | |
| Koran Post Office (historical) | Koran Post Office (historical) | Scioto | Unknown | |
| Lilly Post Office (historical) | Lilly Post Office (historical) | Scioto | Unknown | |
| Lois Post Office (historical) | Lois Post Office (historical) | Scioto | Unknown | |
| Lyra Post Office (historical) | Lyra Post Office (historical) | Scioto | 636 | Pedro |
| Madland Post Office (historical) | Madland Post Office (historical) | Scioto | 630 | South Webster |
| Massie Post Office (historical) | Massie Post Office (historical) | Scioto | 682 | Stockdale |
| McGaw Post Office (historical) | McGaw Post Office (historical) | Scioto | 535 | Pond Run |
| Mount Joy Post Office (historical) | Mount Joy Post Office (historical) | Scioto | 1066 | Rarden |
| Myrtle Post Office (historical) | Myrtle Post Office (historical) | Scioto | Unknown | |
| Nairn Post Office (historical) | Nairn Post Office (historical) | Scioto | Unknown | |
| Nauvoo Post Office (historical) | Nauvoo Post Office (historical) | Scioto | Unknown | |
| New Boston Post Office (historical) | New Boston Post Office (historical) | Scioto | 577 | New Boston |
| Pinkerman Post Office (historical) | Pinkerman Post Office (historical) | Scioto | 676 | Minford |
| Plum Post Office (historical) | Plum Post Office (historical) | Scioto | Unknown | |
| Sedan Post Office (historical) | Sedan Post Office (historical) | Scioto | 797 | Wakefield |
| Uno Post Office (historical) | Uno Post Office (historical) | Scioto | Unknown | |
| Victor Post Office (historical) | Victor Post Office (historical) | Scioto | Unknown | |
| Wallace Mills Post Office (historical) | Wallace Mills Post Office (historical) | Scioto | 614 | Minford |
| Quinn Post Office (historical) | Quinn Post Office (historical) | Scioto | Unknown | |
| Rushtown Post Office (historical) | Rushtown Post Office (historical) | Scioto | 512 | West Portsmouth |
| Ryon Post Office (historical) | Ryon Post Office (historical) | Scioto | Unknown | |
| Sciotoville Post Office (historical) | Sciotoville Post Office (historical) | Scioto | 725 | New Boston |
| South Webster Post Office | South Webster Post Office | Scioto | 699 | South Webster |
| Minford Post Office | Minford Post Office | Scioto | 653 | Minford |
| Wheelersburg Post Office | Wheelersburg Post Office | Scioto | 554 | Wheelersburg |
| Franklin Furnace Post Office | Franklin Furnace Post Office | Scioto | 574 | Wheelersburg |
| Friendship Post Office | Friendship Post Office | Scioto | 548 | Friendship |
| Haverhill Post Office | Haverhill Post Office | Scioto | 548 | Greenup |
| Lucasville Post Office | Lucasville Post Office | Scioto | 558 | Lucasville |
| Otway Post Office | Otway Post Office | Scioto | 600 | Otway |
| Rarden Post Office | Rarden Post Office | Scioto | 617 | Rarden |
| Scioto Furnace Post Office | Scioto Furnace Post Office | Scioto | 607 | Minford |
| Hessville Post Office (historical) | Hessville Post Office (historical) | Sandusky | 630 | Lindsey |
| Demassville Post Office (historical) | Demassville Post Office (historical) | Sandusky | Unknown | |
| Exeter Post Office (historical) | Exeter Post Office (historical) | Sandusky | Unknown | |
| Burgoon Post Office | Burgoon Post Office | Sandusky | 705 | Helena |
| Woodville Post Office | Woodville Post Office | Sandusky | Unknown | |
| Gibsonburg Post Office | Gibsonburg Post Office | Sandusky | 686 | Elmore |
| Helena Post Office | Helena Post Office | Sandusky | 696 | Helena |
| Lindsey Post Office | Lindsey Post Office | Sandusky | 617 | Lindsey |
| Millersville Post Office | Millersville Post Office | Sandusky | 696 | Helena |
| Morgantown Post Office (historical) | Morgantown Post Office (historical) | Pike | 627 | Morgantown |
| Newfain Post Office (historical) | Newfain Post Office (historical) | Pike | 764 | Byington |
| Omega Post Office (historical) | Omega Post Office (historical) | Pike | 587 | Waverly North |
| Peck Post Office (historical) | Peck Post Office (historical) | Pike | 640 | Summithill |
| Pike Post Office (historical) | Pike Post Office (historical) | Pike | Unknown | |
| Redbridge Post Office (historical) | Redbridge Post Office (historical) | Pike | Unknown | |
| Riverdale Post Office (historical) | Riverdale Post Office (historical) | Pike | 554 | Piketon |
| Sargents Post Office (historical) | Sargents Post Office (historical) | Pike | 564 | Piketon |
| Shyville Post Office (historical) | Shyville Post Office (historical) | Pike | 725 | Waverly South |
| Sinai Post Office (historical) | Sinai Post Office (historical) | Pike | Unknown | |
| Sioux Post Office (historical) | Sioux Post Office (historical) | Pike | Unknown | |
| Stollburgh Post Office (historical) | Stollburgh Post Office (historical) | Pike | Unknown | |
| Tennyson Post Office (historical) | Tennyson Post Office (historical) | Pike | 600 | Piketon |
| Wetmore Post Office (historical) | Wetmore Post Office (historical) | Pike | 577 | Wakefield |
| Piketon Post Office | Piketon Post Office | Pike | 577 | Piketon |
| Wakefield Post Office | Wakefield Post Office | Pike | 554 | Wakefield |
| Belmore Post Office | Belmore Post Office | Putnam | 732 | Deshler |
| Berring Post Office (historical) | Berring Post Office (historical) | Putnam | Unknown | |
| Brickner Post Office (historical) | Brickner Post Office (historical) | Putnam | Unknown | |
| Bushong Post Office (historical) | Bushong Post Office (historical) | Putnam | Unknown | |
| Cascade Post Office (historical) | Cascade Post Office (historical) | Putnam | 715 | Continental |
| Clawsons Cross Roads Post Office (historical) | Clawsons Cross Roads Post Office (historical) | Putnam | Unknown | |
| Crawfis College Post Office (historical) | Crawfis College Post Office (historical) | Putnam | Unknown | |
| Cunningham Post Office (historical) | Cunningham Post Office (historical) | Putnam | Unknown | |
| Dickman Post Office (historical) | Dickman Post Office (historical) | Putnam | Unknown | |
| Dornington Post Office (historical) | Dornington Post Office (historical) | Putnam | 725 | Miller City |
| Douglas Post Office (historical) | Douglas Post Office (historical) | Putnam | 741 | Ottoville |
| Dukes Post Office (historical) | Dukes Post Office (historical) | Putnam | Unknown | |
| Dupont Post Office | Dupont Post Office | Putnam | 725 | Continental |
| Adrian Post Office | Adrian Post Office | Seneca | 827 | New Riegel |
| West Lodi Post Office (historical) | West Lodi Post Office (historical) | Seneca | 856 | Fireside |
| South Bloom Post Office (historical) | South Bloom Post Office (historical) | Seneca | Unknown | |
| Springville Post Office (historical) | Springville Post Office (historical) | Seneca | 840 | Alvada |
| Trumbo Post Office (historical) | Trumbo Post Office (historical) | Seneca | Unknown | |
| Watsons Cross Roads Post Office (historical) | Watsons Cross Roads Post Office (historical) | Seneca | Unknown | |
| Omar Post Office (historical) | Omar Post Office (historical) | Seneca | 896 | Centerton |
| Watson Post Office (historical) | Watson Post Office (historical) | Seneca | 715 | Watson |
| Adams Post Office (historical) | Adams Post Office (historical) | Seneca | Unknown | |
| Angus Post Office (historical) | Angus Post Office (historical) | Seneca | 735 | Bascom |
| Berwick Post Office (historical) | Berwick Post Office (historical) | Seneca | 837 | New Riegel |
| Big Spring Post Office (historical) | Big Spring Post Office (historical) | Seneca | Unknown | |
| Bloom Post Office (historical) | Bloom Post Office (historical) | Seneca | Unknown | |
| Butternut Ridge Post Office (historical) | Butternut Ridge Post Office (historical) | Seneca | Unknown | |
| Caroline Post Office (historical) | Caroline Post Office (historical) | Seneca | 922 | Attica |
| Castana Post Office (historical) | Castana Post Office (historical) | Seneca | Unknown | |
| Cooper Post Office (historical) | Cooper Post Office (historical) | Seneca | 833 | Fireside |
| Eden Post Office (historical) | Eden Post Office (historical) | Seneca | Unknown | |
| Fireside Post Office (historical) | Fireside Post Office (historical) | Seneca | 807 | Fireside |
| Fitz Henry Post Office (historical) | Fitz Henry Post Office (historical) | Seneca | Unknown | |
| Fort Ball Post Office (historical) | Fort Ball Post Office (historical) | Seneca | Unknown | |
| Frank Post Office (historical) | Frank Post Office (historical) | Seneca | 837 | Flat Rock |
| Iler Post Office (historical) | Iler Post Office (historical) | Seneca | 738 | Bascom |
| Jackson Station Post Office (historical) | Jackson Station Post Office (historical) | Seneca | Unknown | |
| Leamansville Post Office (historical) | Leamansville Post Office (historical) | Seneca | Unknown | |
| Lindon Post Office (historical) | Lindon Post Office (historical) | Seneca | Unknown | |
| Loudon Post Office (historical) | Loudon Post Office (historical) | Seneca | Unknown | |
| Oakley Post Office (historical) | Oakley Post Office (historical) | Seneca | Unknown | |
| Palo Alto Post Office (historical) | Palo Alto Post Office (historical) | Seneca | Unknown | |
| Reedtown Post Office (historical) | Reedtown Post Office (historical) | Seneca | 863 | Flat Rock |
| Risdon Post Office (historical) | Risdon Post Office (historical) | Seneca | Unknown | |
| Rockaway Post Office (historical) | Rockaway Post Office (historical) | Seneca | 863 | Bloomville |
| Saint Nicholas Post Office (historical) | Saint Nicholas Post Office (historical) | Seneca | 853 | New Riegel |
| Saint Stephen Post Office (historical) | Saint Stephen Post Office (historical) | Seneca | 948 | Attica |
| Saw Mill Post Office (historical) | Saw Mill Post Office (historical) | Seneca | Unknown | |
| Scipio Siding Post Office (historical) | Scipio Siding Post Office (historical) | Seneca | Unknown | |
| Siam Post Office (historical) | Siam Post Office (historical) | Seneca | 958 | Attica |
| Maple Grove Post Office | Maple Grove Post Office | Seneca | 718 | Tiffin North |
| Bettsville Post Office | Bettsville Post Office | Seneca | 689 | Tiffin North |
| Flat Rock Post Office | Flat Rock Post Office | Seneca | 797 | Flat Rock |
| Green Springs Post Office | Green Springs Post Office | Seneca | 709 | Fremont East |
| Bloomville Post Office | Bloomville Post Office | Seneca | 932 | Bloomville |
| Carrothers Post Office | Carrothers Post Office | Seneca | 971 | Chatfield |
| Fort Seneca Post Office | Fort Seneca Post Office | Seneca | 699 | Tiffin North |
| Kansas Post Office | Kansas Post Office | Seneca | 728 | Bascom |
| Alvada Post Office | Alvada Post Office | Seneca | 846 | Alvada |
| Amsden Post Office | Amsden Post Office | Seneca | 725 | Bascom |
| Attica Post Office | Attica Post Office | Seneca | 945 | Attica |
| Bascom Post Office | Bascom Post Office | Seneca | 771 | Bascom |
| Old Fort Post Office | Old Fort Post Office | Seneca | 686 | Tiffin North |
| Republic Post Office | Republic Post Office | Seneca | 886 | Bloomville |
| Melmore Post Office | Melmore Post Office | Seneca | 860 | Bloomville |
| New Riegel Post Office | New Riegel Post Office | Seneca | 833 | New Riegel |
| Morris Post Office (historical) | Morris Post Office (historical) | Seneca | Unknown | |
| McCartyville Post Office (historical) | McCartyville Post Office (historical) | Shelby | 974 | New Knoxville |
| Swanders Post Office (historical) | Swanders Post Office (historical) | Shelby | 1010 | Sidney |
| Hardin Post Office (historical) | Hardin Post Office (historical) | Shelby | Unknown | |
| Tawawa Post Office (historical) | Tawawa Post Office (historical) | Shelby | 1079 | Fletcher |
| Uno Post Office (historical) | Uno Post Office (historical) | Shelby | 1014 | Fort Loramie |
| Valentia Post Office (historical) | Valentia Post Office (historical) | Shelby | Unknown | |
| Wyant Post Office (historical) | Wyant Post Office (historical) | Shelby | Unknown | |
| Rumley Post Office (historical) | Rumley Post Office (historical) | Shelby | 971 | Botkins |
| Saint Patricks Post Office (historical) | Saint Patricks Post Office (historical) | Shelby | 971 | Fort Loramie |
| Speers Landing Post Office (historical) | Speers Landing Post Office (historical) | Shelby | Unknown | |
| Summit Post Office (historical) | Summit Post Office (historical) | Shelby | Unknown | |
| Oran Post Office (historical) | Oran Post Office (historical) | Shelby | 991 | Fort Loramie |
| Pasco Post Office (historical) | Pasco Post Office (historical) | Shelby | 1037 | Port Jefferson |
| Plattsville Post Office (historical) | Plattsville Post Office (historical) | Shelby | 1086 | Fletcher |
| Rhine Post Office (historical) | Rhine Post Office (historical) | Shelby | Unknown | |
| Hale Post Office (historical) | Hale Post Office (historical) | Shelby | Unknown | |
| Kirkwood Post Office (historical) | Kirkwood Post Office (historical) | Shelby | 978 | Piqua East |
| Lockington Post Office (historical) | Lockington Post Office (historical) | Shelby | 948 | Piqua East |
| Montra Post Office (historical) | Montra Post Office (historical) | Shelby | 1053 | Jackson Center |
| Ballou Post Office (historical) | Ballou Post Office (historical) | Shelby | 1102 | Fletcher |
| Central Point Post Office (historical) | Central Point Post Office (historical) | Shelby | Unknown | |
| Dawson Post Office (historical) | Dawson Post Office (historical) | Shelby | 935 | Fort Loramie |
| Depew Post Office (historical) | Depew Post Office (historical) | Shelby | 1066 | Fletcher |
| Anna Post Office | Anna Post Office | Shelby | 1037 | Botkins |
| Botkins Post Office | Botkins Post Office | Shelby | 1001 | Botkins |
| Fort Loramie Post Office | Fort Loramie Post Office | Shelby | 951 | Fort Loramie |
| Houston Post Office | Houston Post Office | Shelby | 958 | Fort Loramie |
| Jackson Center Post Office | Jackson Center Post Office | Shelby | 1027 | Jackson Center |
| Kettlersville Post Office | Kettlersville Post Office | Shelby | 978 | New Knoxville |
| Maplewood Post Office | Maplewood Post Office | Shelby | 1030 | Jackson Center |
| Pemberton Post Office | Pemberton Post Office | Shelby | 1053 | Port Jefferson |
| Port Jefferson Post Office | Port Jefferson Post Office | Shelby | 974 | Port Jefferson |
| Russia Post Office | Russia Post Office | Shelby | 968 | Versailles |
| Sidney Post Office | Sidney Post Office | Shelby | 958 | Sidney |
| McDonaldsville Post Office (historical) | McDonaldsville Post Office (historical) | Stark | 1178 | North Canton |
| Midway Post Office (historical) | Midway Post Office (historical) | Stark | 1165 | Hartville |
| Myers Post Office (historical) | Myers Post Office (historical) | Stark | Unknown | |
| New Baltimore Post Office (historical) | New Baltimore Post Office (historical) | Stark | 1175 | Hartville |
| Mahoning Post Office (historical) | Mahoning Post Office (historical) | Stark | Unknown | |
| Mapleton Post Office (historical) | Mapleton Post Office (historical) | Stark | 1040 | Malvern |
| Marchand Post Office (historical) | Marchand Post Office (historical) | Stark | 1070 | North Canton |
| Marlboro Post Office (historical) | Marlboro Post Office (historical) | Stark | 1165 | Limaville |
| Greene Post Office (historical) | Greene Post Office (historical) | Stark | Unknown | |
| Howenstine Post Office (historical) | Howenstine Post Office (historical) | Stark | 984 | Waynesburg |
| Mount Union Post Office (historical) | Mount Union Post Office (historical) | Stark | 1224 | Alliance |
| Justus Post Office (historical) | Justus Post Office (historical) | Stark | 1020 | Navarre |
| East Greenville Post Office (historical) | East Greenville Post Office (historical) | Stark | 1155 | Dalton |
| Elton Post Office (historical) | Elton Post Office (historical) | Stark | 1056 | Navarre |
| Fairhope Post Office (historical) | Fairhope Post Office (historical) | Stark | 1096 | Canton East |
| Freeburg Post Office (historical) | Freeburg Post Office (historical) | Stark | 1286 | Robertsville |
| Bently Post Office (historical) | Bently Post Office (historical) | Stark | Unknown | |
| Cairo Post Office (historical) | Cairo Post Office (historical) | Stark | 1142 | Hartville |
| Chapman Post Office (historical) | Chapman Post Office (historical) | Stark | Unknown | |
| Crystal Spring Post Office (historical) | Crystal Spring Post Office (historical) | Stark | 942 | Massillon |
| Aultman Post Office (historical) | Aultman Post Office (historical) | Stark | 1102 | North Canton |
| Bancroft Post Office (historical) | Bancroft Post Office (historical) | Stark | Unknown | |
| Barryville Post Office (historical) | Barryville Post Office (historical) | Stark | Unknown | |
| Battlesburg Post Office (historical) | Battlesburg Post Office (historical) | Stark | 1132 | Waynesburg |
| New Franklin Post Office (historical) | New Franklin Post Office (historical) | Stark | 1283 | Homeworth |
| Newman Post Office (historical) | Newman Post Office (historical) | Stark | 1122 | Massillon |
| Otterbein Post Office (historical) | Otterbein Post Office (historical) | Stark | Unknown | |
| Campbellsport Post Office (historical) | Campbellsport Post Office (historical) | Portage | Unknown | |
| Deerfield Post Office | Deerfield Post Office | Portage | 1070 | Deerfield |
| Diamond Post Office | Diamond Post Office | Portage | 988 | Deerfield |
| Garrettsville Post Office | Garrettsville Post Office | Portage | 1001 | Garrettsville |
| Hiram Post Office | Hiram Post Office | Portage | 1260 | Mantua |
| Caton Post Office (historical) | Caton Post Office (historical) | Portage | Unknown | |
| Charlestown Post Office (historical) | Charlestown Post Office (historical) | Portage | 1158 | Ravenna |
| Earlville Post Office (historical) | Earlville Post Office (historical) | Portage | 1089 | Kent |
| Feederdam Post Office (historical) | Feederdam Post Office (historical) | Portage | Unknown | |
| Freedom Post Office (historical) | Freedom Post Office (historical) | Portage | 1171 | Ravenna |
| Industry Post Office (historical) | Industry Post Office (historical) | Portage | 1129 | Atwater |
| Jessee Post Office (historical) | Jessee Post Office (historical) | Portage | Unknown | |
| Lloyd Post Office (historical) | Lloyd Post Office (historical) | Portage | 1024 | Deerfield |
| Mantua Post Office (historical) | Mantua Post Office (historical) | Portage | Unknown | |
| Mishler Post Office (historical) | Mishler Post Office (historical) | Portage | 1148 | Hartville |
| Nelson Post Office (historical) | Nelson Post Office (historical) | Portage | 1066 | Garrettsville |
| New Milford Post Office (historical) | New Milford Post Office (historical) | Portage | 1125 | Atwater |
| Northampton Post Office (historical) | Northampton Post Office (historical) | Portage | Unknown | |
| Old Portage Post Office (historical) | Old Portage Post Office (historical) | Portage | Unknown | |
| Palmyra Post Office (historical) | Palmyra Post Office (historical) | Portage | 1037 | Deerfield |
| Parisville Post Office (historical) | Parisville Post Office (historical) | Portage | Unknown | |
| Parker Post Office (historical) | Parker Post Office (historical) | Portage | Unknown | |
| Pritchard Post Office (historical) | Pritchard Post Office (historical) | Portage | 948 | Windham |
| Randolph Post Office | Randolph Post Office | Portage | 1152 | Atwater |
| Rapid Post Office (historical) | Rapid Post Office (historical) | Portage | Unknown | |
| Rootstown Post Office | Rootstown Post Office | Portage | 1125 | Atwater |
| Saint Joseph Post Office (historical) | Saint Joseph Post Office (historical) | Portage | 1168 | Suffield |
| Shalersville Post Office (historical) | Shalersville Post Office (historical) | Portage | 1240 | Ravenna |
| Silo Post Office (historical) | Silo Post Office (historical) | Portage | 1165 | Aurora |
| Suffield Post Office (historical) | Suffield Post Office (historical) | Portage | 1184 | Suffield |
| Throndyke Post Office (historical) | Throndyke Post Office (historical) | Portage | Unknown | |
| Yale Post Office (historical) | Yale Post Office (historical) | Portage | 1115 | Deerfield |
| Brennersville Post Office (historical) | Brennersville Post Office (historical) | Preble | 1037 | Lewisburg |
| Browns Station Post Office (historical) | Browns Station Post Office (historical) | Preble | Unknown | |
| Campbellstown Post Office (historical) | Campbellstown Post Office (historical) | Preble | 1178 | New Paris |
| Dot Post Office (historical) | Dot Post Office (historical) | Preble | Unknown | |
| Eaton Post Office | Eaton Post Office | Preble | 1043 | Eaton South |
| Ebenezer Post Office (historical) | Ebenezer Post Office (historical) | Preble | 1145 | Eaton North |
| Enterprise Post Office (historical) | Enterprise Post Office (historical) | Preble | 932 | West Alexandria |
| Gettysburgh Post Office (historical) | Gettysburgh Post Office (historical) | Preble | 1171 | Eaton North |
| Gratis Post Office | Gratis Post Office | Preble | 873 | West Alexandria |
| Greenbush Post Office (historical) | Greenbush Post Office (historical) | Preble | 925 | Middletown |
| Hood Post Office (historical) | Hood Post Office (historical) | Preble | Unknown | |
| Ingomar Post Office (historical) | Ingomar Post Office (historical) | Preble | 922 | West Alexandria |
| Lanier Post Office (historical) | Lanier Post Office (historical) | Preble | Unknown | |
| McCowns Cross Roads Post Office (historical) | McCowns Cross Roads Post Office (historical) | Preble | Unknown | |
| Mio Post Office (historical) | Mio Post Office (historical) | Preble | Unknown | |
| Morning Sun Post Office (historical) | Morning Sun Post Office (historical) | Preble | 991 | Oxford |
| New Hope Station Post Office (historical) | New Hope Station Post Office (historical) | Preble | 1152 | Eaton North |
| New Westville Post Office (historical) | New Westville Post Office (historical) | Preble | 1188 | New Paris |
| Progress Post Office (historical) | Progress Post Office (historical) | Preble | Unknown | |
| Riota Post Office (historical) | Riota Post Office (historical) | Preble | Unknown | |
| Twin Post Office (historical) | Twin Post Office (historical) | Preble | Unknown | |
| Upshur Post Office (historical) | Upshur Post Office (historical) | Preble | Unknown | |
| West Florence Post Office (historical) | West Florence Post Office (historical) | Preble | 1148 | Fairhaven |
| West Sonora Post Office (historical) | West Sonora Post Office (historical) | Preble | 1043 | Arcanum |
| Wheatville Post Office (historical) | Wheatville Post Office (historical) | Preble | 948 | West Alexandria |
| New Paris Post Office | New Paris Post Office | Preble | 1033 | New Paris |
| West Elkton Post Office | West Elkton Post Office | Preble | 1033 | West Elkton |
| Stow Post Office (historical) | Stow Post Office (historical) | Summit | 1093 | Hudson |
| Fort Jennings Post Office | Fort Jennings Post Office | Putnam | 748 | Ottoville |
| Gilboa Post Office | Gilboa Post Office | Putnam | 751 | Leipsic |
| Glandorf Post Office | Glandorf Post Office | Putnam | 728 | Ottawa |
| Hector Post Office (historical) | Hector Post Office (historical) | Putnam | 722 | Miller City |
| Huntstown Post Office (historical) | Huntstown Post Office (historical) | Putnam | 722 | Continental |
| Kalida Post Office | Kalida Post Office | Putnam | 725 | Kalida |
| Kieferville Post Office (historical) | Kieferville Post Office (historical) | Putnam | 718 | Miller City |
| Leipsic Post Office (historical) | Leipsic Post Office (historical) | Putnam | 748 | Leipsic |
| Medary Post Office (historical) | Medary Post Office (historical) | Putnam | Unknown | |
| Muntanna Post Office (historical) | Muntanna Post Office (historical) | Putnam | 725 | Ottoville |
| Oakdale Post Office (historical) | Oakdale Post Office (historical) | Putnam | 738 | Deshler |
| Philander Post Office (historical) | Philander Post Office (historical) | Putnam | Unknown | |
| Pleasant Post Office (historical) | Pleasant Post Office (historical) | Putnam | Unknown | |
| Prentiss Post Office (historical) | Prentiss Post Office (historical) | Putnam | 741 | Hamler |
| Rice Post Office (historical) | Rice Post Office (historical) | Putnam | 718 | Ayersville |
| Rimer Post Office (historical) | Rimer Post Office (historical) | Putnam | 751 | Kalida |
| Rushmore Post Office (historical) | Rushmore Post Office (historical) | Putnam | 758 | Delphos |
| Sheridan Post Office (historical) | Sheridan Post Office (historical) | Putnam | Unknown | |
| Stanley Post Office (historical) | Stanley Post Office (historical) | Putnam | Unknown | |
| Sugar Ridge Post Office (historical) | Sugar Ridge Post Office (historical) | Putnam | Unknown | |
| Vaughnsville Post Office | Vaughnsville Post Office | Putnam | 764 | Kalida |
| West Leipsic Post Office (historical) | West Leipsic Post Office (historical) | Putnam | 771 | Ottawa |
| Williams Post Office (historical) | Williams Post Office (historical) | Putnam | Unknown | |
| Wisterman Post Office (historical) | Wisterman Post Office (historical) | Putnam | 715 | Miller City |
| Adario Post Office (historical) | Adario Post Office (historical) | Richland | 1158 | Olivesburg |
| Alta Post Office (historical) | Alta Post Office (historical) | Richland | 1286 | Mansfield South |
| Amoy Post Office (historical) | Amoy Post Office (historical) | Richland | 1257 | Mansfield North |
| Bangor Post Office (historical) | Bangor Post Office (historical) | Richland | 1378 | Bellville |
| Barcelona Post Office (historical) | Barcelona Post Office (historical) | Richland | Unknown | |
| Barnes Post Office (historical) | Barnes Post Office (historical) | Richland | Unknown | |
| Clearfork Post Office (historical) | Clearfork Post Office (historical) | Richland | Unknown | |
| Cookton Post Office (historical) | Cookton Post Office (historical) | Richland | Unknown | |
| Davis Post Office (historical) | Davis Post Office (historical) | Richland | Unknown | |
| Dott Post Office (historical) | Dott Post Office (historical) | Richland | Unknown | |
| Epworth Post Office (historical) | Epworth Post Office (historical) | Richland | 1122 | Pavonia |
| Hastings Post Office (historical) | Hastings Post Office (historical) | Richland | 1319 | Lucas |
| Lexington Post Office (historical) | Lexington Post Office (historical) | Richland | 1197 | Mansfield South |
| Mace Post Office (historical) | Mace Post Office (historical) | Richland | Unknown | |
| Minch Post Office (historical) | Minch Post Office (historical) | Richland | Unknown | |
| Newville Post Office (historical) | Newville Post Office (historical) | Richland | 1047 | Lucas |
| Butler Post Office | Butler Post Office | Richland | 1073 | Butler |
| Lucas Post Office | Lucas Post Office | Richland | 1089 | Lucas |
| Riblets Post Office (historical) | Riblets Post Office (historical) | Richland | 1260 | Crestline |
| Rives Post Office (historical) | Rives Post Office (historical) | Richland | Unknown | |
| Shenandoah Post Office (historical) | Shenandoah Post Office (historical) | Richland | 1158 | Olivesburg |
| Six Corners Post Office (historical) | Six Corners Post Office (historical) | Richland | Unknown | |
| Taylor Post Office (historical) | Taylor Post Office (historical) | Richland | Unknown | |
| Vernon Junction Post Office (historical) | Vernon Junction Post Office (historical) | Richland | 1132 | Crestline |
| Brady Post Office | Brady Post Office | Portage | Unknown | |
| Burghill Post Office | Burghill Post Office | Trumbull | 1024 | Orangeville |
| Cortland Post Office | Cortland Post Office | Trumbull | 1014 | Cortland |
| West Farmington Post Office | West Farmington Post Office | Trumbull | 860 | West Farmington |
| Kinsman Post Office | Kinsman Post Office | Trumbull | 938 | Kinsman |
| Leavittsburg Post Office | Leavittsburg Post Office | Trumbull | 909 | Newton Falls |
| Mineral Ridge Post Office | Mineral Ridge Post Office | Trumbull | 1010 | Warren |
| North Bloomfield Post Office | North Bloomfield Post Office | Trumbull | 896 | Bristolville |
| Southington Station Post Office | Southington Station Post Office | Trumbull | Unknown | |
| Vienna Post Office | Vienna Post Office | Trumbull | 1152 | Girard |
| Bristolville Post Office | Bristolville Post Office | Trumbull | 899 | Bristolville |
| The Avenue Post Office | The Avenue Post Office | Trumbull | Unknown | |
| Farmington Post Office (historical) | Farmington Post Office (historical) | Trumbull | 840 | West Farmington |
| Greensburg Post Office (historical) | Greensburg Post Office (historical) | Trumbull | Unknown | |
| Lockwood Post Office (historical) | Lockwood Post Office (historical) | Trumbull | 899 | Bristolville |
| Powers Corners Post Office (historical) | Powers Corners Post Office (historical) | Trumbull | Unknown | |
| West Mecca Post Office (historical) | West Mecca Post Office (historical) | Trumbull | 932 | Bristolville |
| State Line Post Office (historical) | State Line Post Office (historical) | Trumbull | Unknown | |
| State Road Post Office (historical) | State Road Post Office (historical) | Trumbull | 942 | Southington |
| Tyrrell Post Office (historical) | Tyrrell Post Office (historical) | Trumbull | 1132 | Cortland |
| Churchill Post Office (historical) | Churchill Post Office (historical) | Trumbull | 1060 | Girard |
| Coalburg Post Office (historical) | Coalburg Post Office (historical) | Trumbull | 1010 | Sharon West |
| Cornelian Post Office (historical) | Cornelian Post Office (historical) | Trumbull | 1152 | Kinsman |
| Lordstown Post Office (historical) | Lordstown Post Office (historical) | Trumbull | 955 | Warren |
| Apco Post Office (historical) | Apco Post Office (historical) | Portage | Unknown | |
| Aurora Post Office (historical) | Aurora Post Office (historical) | Portage | 1125 | Aurora |
| Brimfield Post Office (historical) | Brimfield Post Office (historical) | Portage | 1096 | Suffield |
| Campells Port Post Office (historical) | Campells Port Post Office (historical) | Portage | 1027 | Ravenna |
| Greensburg Post Office | Greensburg Post Office | Summit | 1184 | North Canton |
| Twinsburg Post Office | Twinsburg Post Office | Summit | 1152 | Aurora |
| Richfield Post Office | Richfield Post Office | Summit | 1145 | West Richfield |
| Tallmadge Post Office | Tallmadge Post Office | Summit | 1115 | Akron East |
| Kenmore Post Office (historical) | Kenmore Post Office (historical) | Summit | Unknown | |
| Johnson Post Office (historical) | Johnson Post Office (historical) | Summit | Unknown | |
| Loyaloak Post Office (historical) | Loyaloak Post Office (historical) | Summit | Unknown | |
| Macedonia Post Office (historical) | Macedonia Post Office (historical) | Summit | Unknown | |
| North Springfield Post Office (historical) | North Springfield Post Office (historical) | Summit | 814 | Gnadenhutten |
| Norton Centre Post Office (historical) | Norton Centre Post Office (historical) | Summit | Unknown | |
| Boston Post Office (historical) | Boston Post Office (historical) | Summit | 656 | Northfield |
| Botzum Post Office (historical) | Botzum Post Office (historical) | Summit | 745 | Peninsula |
| Copley Post Office (historical) | Copley Post Office (historical) | Summit | 1050 | Wadsworth |
| Sherman Post Office (historical) | Sherman Post Office (historical) | Summit | 1086 | Wadsworth |
| Ghent Post Office (historical) | Ghent Post Office (historical) | Summit | 915 | West Richfield |
| Alliance Post Office | Alliance Post Office | Stark | 1155 | Alliance |
| Beach City Post Office | Beach City Post Office | Stark | 1007 | Navarre |
| East Sparta Post Office | East Sparta Post Office | Stark | 968 | Waynesburg |
| Navarre Post Office | Navarre Post Office | Stark | 965 | Navarre |
| North Lawrence Post Office | North Lawrence Post Office | Stark | 1033 | Dalton |
| Uniontown Post Office | Uniontown Post Office | Stark | 1119 | North Canton |
| Waynesburg Post Office | Waynesburg Post Office | Stark | 994 | Waynesburg |
| Wilmot Post office | Wilmot Post office | Stark | 1027 | Wilmot |
| Pallow Post Office (historical) | Pallow Post Office (historical) | Stark | Unknown | |
| Pekin Post Office (historical) | Pekin Post Office (historical) | Stark | Unknown | |
| Pigeonrun Post Office (historical) | Pigeonrun Post Office (historical) | Stark | 1079 | Navarre |
| Reedurban Post Office (historical) | Reedurban Post Office (historical) | Stark | 1083 | Canton West |
| North Canton Post Office (historical) | North Canton Post Office (historical) | Stark | 1155 | North Canton |
| North Industry Post Office (historical) | North Industry Post Office (historical) | Stark | 1004 | Waynesburg |
| East Canton Post Office (historical) | East Canton Post Office (historical) | Stark | 1165 | Canton East |
| Oval City Post Office (historical) | Oval City Post Office (historical) | Stark | 1122 | Hartville |
| Rhodes Post Office (historical) | Rhodes Post Office (historical) | Stark | Unknown | |
| Richville Post Office (historical) | Richville Post Office (historical) | Stark | 1063 | Canton West |
| Waco Post Office (historical) | Waco Post Office (historical) | Stark | 1070 | Canton East |
| West Brookfield Post Office | West Brookfield Post Office | Stark | 1043 | Massillon |
| Earnest Post Office (historical) | Earnest Post Office (historical) | Preble | Unknown | |
| Blair Post Office (historical) | Blair Post Office (historical) | Preble | Unknown | |
| Adelphia Post Office | Adelphia Post Office | Ross | 830 | Laurelville |
| Bainbridge Post Office | Bainbridge Post Office | Ross | 735 | Bainbridge |
| Hallsville Post Office | Hallsville Post Office | Ross | 833 | Hallsville |
| Alma Post Office (historical) | Alma Post Office (historical) | Ross | 636 | Waverly North |
| Anderson Post Office (historical) | Anderson Post Office (historical) | Ross | 696 | Chillicothe West |
| Andersonville Post Office (historical) | Andersonville Post Office (historical) | Ross | 656 | Andersonville |
| Antonis Post Office (historical) | Antonis Post Office (historical) | Ross | 715 | Waverly North |
| Austin Post Office (historical) | Austin Post Office (historical) | Ross | 761 | Frankfort |
| Beecher Post Office (historical) | Beecher Post Office (historical) | Ross | Unknown | |
| Bier Post Office (historical) | Bier Post Office (historical) | Ross | Unknown | |
| Browns Cross Roads Post Office (historical) | Browns Cross Roads Post Office (historical) | Ross | Unknown | |
| Carrie Post Office (historical) | Carrie Post Office (historical) | Ross | Unknown | |
| Crisp Post Office (historical) | Crisp Post Office (historical) | Ross | Unknown | |
| Crockettsville Post Office (historical) | Crockettsville Post Office (historical) | Ross | Unknown | |
| Dry Creek Post Office (historical) | Dry Creek Post Office (historical) | Ross | Unknown | |
| Ebush Post Office (historical) | Ebush Post Office (historical) | Ross | 699 | Chillicothe West |
| Feightner Post Office (historical) | Feightner Post Office (historical) | Ross | 1099 | Laurelville |
| Greenland Post Office (historical) | Greenland Post Office (historical) | Ross | 814 | Andersonville |
| Halltown Post Office (historical) | Halltown Post Office (historical) | Ross | Unknown | |
| Harpers Station Post Office (historical) | Harpers Station Post Office (historical) | Ross | Unknown | |
| Harris Station Post Office (historical) | Harris Station Post Office (historical) | Ross | Unknown | |
| Higby Post Office (historical) | Higby Post Office (historical) | Ross | 591 | Richmond Dale |
| Hopeton Post Office (historical) | Hopeton Post Office (historical) | Ross | Unknown | |
| Hopetown Post Office (historical) | Hopetown Post Office (historical) | Ross | 646 | Kingston |
| Humboldt Post Office (historical) | Humboldt Post Office (historical) | Ross | 820 | South Salem |
| Jarvis Post Office (historical) | Jarvis Post Office (historical) | Ross | 738 | Chillicothe East |
| Kinnikinnick Post Office (historical) | Kinnikinnick Post Office (historical) | Ross | 656 | Kingston |
| Lattas Post Office (historical) | Lattas Post Office (historical) | Ross | Unknown | |
| Mooresville Post Office (historical) | Mooresville Post Office (historical) | Ross | 679 | Londonderry |
| Newingburg Post Office (historical) | Newingburg Post Office (historical) | Ross | 1129 | Chillicothe West |
| Nipgen Post Office (historical) | Nipgen Post Office (historical) | Ross | 1079 | Morgantown |
| Peppers Post Office (historical) | Peppers Post Office (historical) | Ross | Unknown | |
| Pike Run Post Office (historical) | Pike Run Post Office (historical) | Ross | Unknown | |
| Plano Post Office (historical) | Plano Post Office (historical) | Ross | Unknown | |
| Plyley Post Office (historical) | Plyley Post Office (historical) | Ross | Unknown | |
| Pride Post Office (historical) | Pride Post Office (historical) | Ross | 594 | Waverly North |
| Rapid Forge Post Office (historical) | Rapid Forge Post Office (historical) | Ross | Unknown | |
| Roxabell Post Office (historical) | Roxabell Post Office (historical) | Ross | 751 | Frankfort |
| Kingston Post Office | Kingston Post Office | Ross | 791 | Kingston |
| Slate Mills Post Office (historical) | Slate Mills Post Office (historical) | Ross | 692 | Chillicothe West |
| Spargursville Post Office (historical) | Spargursville Post Office (historical) | Ross | 728 | Morgantown |
| Sulphur Lick Post Office (historical) | Sulphur Lick Post Office (historical) | Ross | 699 | Chillicothe West |
| Thornton Post Office (historical) | Thornton Post Office (historical) | Ross | 965 | Good Hope |
| Thrifton Post Office (historical) | Thrifton Post Office (historical) | Ross | 873 | South Salem |
| Tucson Post Office (historical) | Tucson Post Office (historical) | Ross | 722 | Londonderry |
| Twin Post Office (historical) | Twin Post Office (historical) | Ross | Unknown | |
| Unionola Post Office (historical) | Unionola Post Office (historical) | Ross | Unknown | |
| Vidal Post Office (historical) | Vidal Post Office (historical) | Ross | Unknown | |
| View Post Office (historical) | View Post Office (historical) | Ross | 961 | Andersonville |
| Vigo Post Office (historical) | Vigo Post Office (historical) | Ross | 610 | Richmond Dale |
| Waller Post Office (historical) | Waller Post Office (historical) | Ross | Unknown | |
| South Salem Post Office | South Salem Post Office | Ross | 928 | South Salem |
| Colby Post Office (historical) | Colby Post Office (historical) | Sandusky | 784 | Clyde |
| Erlin Post Office (historical) | Erlin Post Office (historical) | Sandusky | 604 | Fremont East |
| Faith Post Office (historical) | Faith Post Office (historical) | Sandusky | Unknown | |
| Girton Post Office (historical) | Girton Post Office (historical) | Sandusky | 725 | Helena |
| Green Creek Mills Post Office (historical) | Green Creek Mills Post Office (historical) | Sandusky | Unknown | |
| Greensburgh Cross Roads Post Office (historical) | Greensburgh Cross Roads Post Office (historical) | Sandusky | Unknown | |
| Havens Post Office (historical) | Havens Post Office (historical) | Sandusky | 669 | Fremont West |
| Kingsway Post Office (historical) | Kingsway Post Office (historical) | Sandusky | 594 | Lindsey |
| Lelandville Post Office (historical) | Lelandville Post Office (historical) | Sandusky | Unknown | |
| Muddy Creek Post Office (historical) | Muddy Creek Post Office (historical) | Sandusky | Unknown | |
| Riley Center Post Office (historical) | Riley Center Post Office (historical) | Sandusky | Unknown | |
| Sugar Creek Post Office (historical) | Sugar Creek Post Office (historical) | Sandusky | Unknown | |
| Townsend Post Office (historical) | Townsend Post Office (historical) | Sandusky | Unknown | |
| West Fremont Post Office (historical) | West Fremont Post Office (historical) | Sandusky | Unknown | |
| West Townsend Post Office (historical) | West Townsend Post Office (historical) | Sandusky | Unknown | |
| York North Ridge Post Office (historical) | York North Ridge Post Office (historical) | Sandusky | Unknown | |
| Rollersville Post Office (historical) | Rollersville Post Office (historical) | Sandusky | 686 | Bradner |
| Squires Post Office (historical) | Squires Post Office (historical) | Sandusky | 709 | Helena |
| Teemes Post Office (historical) | Teemes Post Office (historical) | Sandusky | 591 | Castalia |
| Tinney Post Office (historical) | Tinney Post Office (historical) | Sandusky | 702 | Helena |
| Vickery Post Office | Vickery Post Office | Sandusky | 597 | Vickery |
| Whitmore Post Office (historical) | Whitmore Post Office (historical) | Sandusky | 600 | Vickery |
| York Post Office (historical) | York Post Office (historical) | Sandusky | 646 | Clyde |
| Sippo Post Office (historical) | Sippo Post Office (historical) | Stark | 1056 | Massillon |
| South Run Post Office (historical) | South Run Post Office (historical) | Stark | Unknown | |
| Stanwood Post Office (historical) | Stanwood Post Office (historical) | Stark | 1112 | Dalton |
| Stephensville Post Office (historical) | Stephensville Post Office (historical) | Stark | Unknown | |
| Trump Post Office (historical) | Trump Post Office (historical) | Stark | 1063 | Canton East |
| Wises Mills Post Office (historical) | Wises Mills Post Office (historical) | Stark | Unknown | |
| Brewster Post Office | Brewster Post Office | Stark | 994 | Navarre |
| Canal Fulton Post Office | Canal Fulton Post Office | Stark | 958 | Canal Fulton |
| Canton Post Office | Canton Post Office | Stark | 1056 | Canton West |
| Greentown Post Office | Greentown Post Office | Stark | 1197 | North Canton |
| Hartville Post Office | Hartville Post Office | Stark | 1171 | Hartville |
| Limaville Post Office | Limaville Post Office | Stark | 1063 | Limaville |
| Louisville Post Office | Louisville Post Office | Stark | 1138 | Canton East |
| Magnolia Post Office | Magnolia Post Office | Stark | 948 | Waynesburg |
| Massillon Post Office | Massillon Post Office | Stark | 945 | Massillon |
| Maximo Post Office | Maximo Post Office | Stark | 1178 | Limaville |
| Middlebranch Post Office | Middlebranch Post Office | Stark | 1115 | Hartville |
| Minerva Post Office | Minerva Post Office | Stark | 1053 | Minerva |
| Paris Post Office | Paris Post Office | Stark | 1263 | Robertsville |
| Robertsville Post Office | Robertsville Post Office | Stark | 1086 | Robertsville |
| West Brookfield Post Office | West Brookfield Post Office | Stark | 1043 | Massillon |
| Akron Post Office | Akron Post Office | Summit | 961 | Akron West |
| Barberton Post Office | Barberton Post Office | Summit | 978 | Akron West |
| Bath Post Office | Bath Post Office | Summit | 1122 | West Richfield |
| Clinton Post Office | Clinton Post Office | Summit | 945 | Doylestown |
| Cuyahoga Falls Post Office | Cuyahoga Falls Post Office | Summit | 1024 | Hudson |
| Hudson Post Office | Hudson Post Office | Summit | 1076 | Hudson |
| Lakemore Post Office | Lakemore Post Office | Summit | 1079 | Akron East |
| Mogadore Post Office | Mogadore Post Office | Summit | 1155 | Akron East |
| Munroe Falls Post Office | Munroe Falls Post Office | Summit | 1024 | Hudson |
| Northfield Post Office | Northfield Post Office | Summit | 1050 | Northfield |
| Peninsula Post Office | Peninsula Post Office | Summit | 755 | Peninsula |
| Barberton Post Office (historical) | Barberton Post Office (historical) | Summit | 974 | Akron West |
| Brandywine Mills Post Office (historical) | Brandywine Mills Post Office (historical) | Summit | Unknown | |
| Brittain Post Office (historical) | Brittain Post Office (historical) | Summit | 1066 | Akron East |
| Comet Post Office (historical) | Comet Post Office (historical) | Summit | 994 | Canal Fulton |
| Coventry Post Office (historical) | Coventry Post Office (historical) | Summit | Unknown | |
| Cranmer Post Office (historical) | Cranmer Post Office (historical) | Summit | 768 | Peninsula |
| Darrowville Post Office (historical) | Darrowville Post Office (historical) | Summit | 1073 | Hudson |
| Ellet Post Office (historical) | Ellet Post Office (historical) | Summit | 1115 | Akron East |
| Everett Post Office (historical) | Everett Post Office (historical) | Summit | 725 | Peninsula |
| Fairlawn Post Office (historical) | Fairlawn Post Office (historical) | Summit | 1007 | Peninsula |
| Hanson Post Office (historical) | Hanson Post Office (historical) | Summit | Unknown | |
| Ira Post Office (historical) | Ira Post Office (historical) | Summit | 735 | Peninsula |
| Irene Post Office (historical) | Irene Post Office (historical) | Summit | Unknown | |
| Krumroy Post Office (historical) | Krumroy Post Office (historical) | Summit | 1106 | Akron East |
| Lawndale Post Office (historical) | Lawndale Post Office (historical) | Summit | 1004 | Akron West |
| Metz Post Office (historical) | Metz Post Office (historical) | Summit | 1040 | Hudson |
| Middlebury Post Office (historical) | Middlebury Post Office (historical) | Summit | Unknown | |
| Millheim Post Office (historical) | Millheim Post Office (historical) | Summit | 1079 | North Canton |
| Montrose Post Office (historical) | Montrose Post Office (historical) | Summit | Unknown | |
| Myersville Post Office (historical) | Myersville Post Office (historical) | Summit | 1083 | North Canton |
| New Bridge Post Office (historical) | New Bridge Post Office (historical) | Summit | Unknown | |
| Niles Post Office (historical) | Niles Post Office (historical) | Summit | Unknown | |
| Nimilila Post Office (historical) | Nimilila Post Office (historical) | Summit | Unknown | |
| Paxton Post Office (historical) | Paxton Post Office (historical) | Summit | 1043 | Wadsworth |
| Bridgeford Post Office (historical) | Bridgeford Post Office (historical) | Sandusky | Unknown | |
| Hometown Post Office (historical) | Hometown Post Office (historical) | Summit | Unknown | |
| Reservoir Post Office (historical) | Reservoir Post Office (historical) | Trumbull | Unknown | |
| Sawyerwood Post Office (historical) | Sawyerwood Post Office (historical) | Summit | 1093 | Akron East |
| Sherbondy Post Office (historical) | Sherbondy Post Office (historical) | Summit | Unknown | |
| Summit Post Office (historical) | Summit Post Office (historical) | Summit | Unknown | |
| Thomastown Post Office (historical) | Thomastown Post Office (historical) | Summit | 1129 | Akron East |
| Vallens Post Office (historical) | Vallens Post Office (historical) | Summit | Unknown | |
| Vester Post Office (historical) | Vester Post Office (historical) | Summit | Unknown | |
| Warwick Post Office (historical) | Warwick Post Office (historical) | Summit | 958 | Doylestown |
| Western Star Post Office (historical) | Western Star Post Office (historical) | Summit | Unknown | |
| Worden Post Office (historical) | Worden Post Office (historical) | Summit | Unknown | |
| Amity Post Office (historical) | Amity Post Office (historical) | Trumbull | Unknown | |
| Antietam Post Office (historical) | Antietam Post Office (historical) | Trumbull | 1079 | Orangeville |
| Barber Post Office (historical) | Barber Post Office (historical) | Trumbull | Unknown | |
| Barclay Post Office (historical) | Barclay Post Office (historical) | Trumbull | 951 | Gustavus |
| Bazetta Post Office (historical) | Bazetta Post Office (historical) | Trumbull | Unknown | |
| Bloomfield Post Office (historical) | Bloomfield Post Office (historical) | Trumbull | Unknown | |
| Braceville Post Office (historical) | Braceville Post Office (historical) | Trumbull | 1014 | Newton Falls |
| Brockway Post Office (historical) | Brockway Post Office (historical) | Trumbull | 1083 | Orangeville |
| Centre Farmington Post Office (historical) | Centre Farmington Post Office (historical) | Trumbull | Unknown | |
| Chadwick Post Office (historical) | Chadwick Post Office (historical) | Trumbull | Unknown | |
| Champion Post Office (historical) | Champion Post Office (historical) | Trumbull | 935 | Champion |
| Corinth Post Office (historical) | Corinth Post Office (historical) | Trumbull | 965 | Kinsman |
| Deforest Post Office (historical) | Deforest Post Office (historical) | Trumbull | 938 | Warren |
| Delightful Post Office (historical) | Delightful Post Office (historical) | Trumbull | 945 | Southington |
| Dewey Post Office (historical) | Dewey Post Office (historical) | Trumbull | 1076 | Kinsman |
| Dilworth Post Office (historical) | Dilworth Post Office (historical) | Trumbull | 1056 | Gustavus |
| Duck Creek Post Office (historical) | Duck Creek Post Office (historical) | Trumbull | 974 | Newton Falls |
| Brookfield Post Office | Brookfield Post Office | Trumbull | 1165 | Sharon West |
| Farmdale Post Office | Farmdale Post Office | Trumbull | 935 | Kinsman |
| Farmdale Post Office | Farmdale Post Office | Trumbull | 840 | West Farmington |
| Fowler Post Office | Fowler Post Office | Trumbull | 1138 | Cortland |
| Girard Post Office | Girard Post Office | Trumbull | 909 | Girard |
| Hartford Post Office | Hartford Post Office | Trumbull | 1168 | Orangeville |
| Masury Post Office | Masury Post Office | Trumbull | 909 | Sharon West |
| McDonald Post Office | McDonald Post Office | Trumbull | 965 | Girard |
| Mesopotamia Post Office | Mesopotamia Post Office | Trumbull | 856 | West Farmington |
| Orangeville Post Office | Orangeville Post Office | Trumbull | 922 | Orangeville |
| Gustavus Post Office | Gustavus Post Office | Trumbull | 1073 | Gustavus |
| Howland Post Office (historical) | Howland Post Office (historical) | Trumbull | Unknown | |
| Johnsonville Post Office (historical) | Johnsonville Post Office (historical) | Trumbull | Unknown | |
| Kenilworth Post Office (historical) | Kenilworth Post Office (historical) | Trumbull | 948 | Gustavus |
| Lakelet Post Office (historical) | Lakelet Post Office (historical) | Trumbull | Unknown | |
| Lamont Post Office (historical) | Lamont Post Office (historical) | Trumbull | Unknown | |
| Latimer Post Office (historical) | Latimer Post Office (historical) | Trumbull | 1014 | Orangeville |
| Meander Post Office (historical) | Meander Post Office (historical) | Trumbull | Unknown | |
| Mecca Post Office (historical) | Mecca Post Office (historical) | Trumbull | 925 | Gustavus |
| Musqueto Creek Post Office (historical) | Musqueto Creek Post Office (historical) | Trumbull | Unknown | |
| North Bristol Post Office (historical) | North Bristol Post Office (historical) | Trumbull | 876 | Bristolville |
| Nutwood Post Office (historical) | Nutwood Post Office (historical) | Trumbull | 1063 | Cortland |
| Oakfield Post Office (historical) | Oakfield Post Office (historical) | Trumbull | 915 | Bristolville |
| Paynes Corners Post Office (historical) | Paynes Corners Post Office (historical) | Trumbull | 1106 | Sharon West |
| Penza Post Office (historical) | Penza Post Office (historical) | Trumbull | Unknown | |
| Phalanx Post Office (historical) | Phalanx Post Office (historical) | Trumbull | 912 | Southington |
| Sandy Post Office (historical) | Sandy Post Office (historical) | Trumbull | Unknown | |
| Sodom Post Office (historical) | Sodom Post Office (historical) | Trumbull | 1106 | Girard |
| Spokane Post Office (historical) | Spokane Post Office (historical) | Trumbull | 925 | Bristolville |
| Sugar Creek Post Office (historical) | Sugar Creek Post Office (historical) | Trumbull | Unknown | |
| Sunside Post Office (historical) | Sunside Post Office (historical) | Trumbull | Unknown | |
| Superior Post Office (historical) | Superior Post Office (historical) | Trumbull | 961 | Kinsman |
| Triumph Post Office (historical) | Triumph Post Office (historical) | Trumbull | 951 | Gustavus |
| Portage Lakes Post Office (historical) | Portage Lakes Post Office (historical) | Trumbull | Unknown | |
| Slope Post Office (historical) | Slope Post Office (historical) | Trumbull | Unknown | |
| Wanda Post Office (historical) | Wanda Post Office (historical) | Trumbull | Unknown | |
| Wassie Post Office | Wassie Post Office | Trumbull | 892 | Southington |
| Weldon Post Office (historical) | Weldon Post Office (historical) | Trumbull | 1155 | Orangeville |
| Wethersfield Post Office (historical) | Wethersfield Post Office (historical) | Trumbull | Unknown | |
| Wildare Post Office (historical) | Wildare Post Office (historical) | Trumbull | 945 | Champion |
| Willow Dale Post Office (historical) | Willow Dale Post Office (historical) | Trumbull | Unknown | |
| Beidler Post Office (historical) | Beidler Post Office (historical) | Tuscarawas | Unknown | |
| Brady Post Office (historical) | Brady Post Office (historical) | Tuscarawas | Unknown | |
| Cadwallader Post Office (historical) | Cadwallader Post Office (historical) | Tuscarawas | Unknown | |
| Dryden Post Office (historical) | Dryden Post Office (historical) | Tuscarawas | Unknown | |
| Barnhill Post Office (historical) | Barnhill Post Office (historical) | Tuscarawas | 883 | Uhrichsville |
| Barrs Mills Post Office (historical) | Barrs Mills Post Office (historical) | Tuscarawas | 991 | Strasburg |
| Berwyn Post Office (historical) | Berwyn Post Office (historical) | Tuscarawas | Unknown | |
| Booth Post Office (historical) | Booth Post Office (historical) | Tuscarawas | 1125 | Kimbolton |
| Bolivar Post Office | Bolivar Post Office | Tuscarawas | 928 | Bolivar |
| Dennison Post Office | Dennison Post Office | Tuscarawas | 863 | Uhrichsville |
| Dundee Post Office | Dundee Post Office | Tuscarawas | 1033 | Strasburg |
| Elm Post Office (historical) | Elm Post Office (historical) | Tuscarawas | Unknown | |
| Forest Station Post Office (historical) | Forest Station Post Office (historical) | Tuscarawas | Unknown | |
| Furnaceville Post Office (historical) | Furnaceville Post Office (historical) | Tuscarawas | Unknown | |
| Haunsburgh Post Office (historical) | Haunsburgh Post Office (historical) | Tuscarawas | Unknown | |
| Milligan Post Office (historical) | Milligan Post Office (historical) | Tuscarawas | Unknown | |
| Mossers Post Office (historical) | Mossers Post Office (historical) | Tuscarawas | Unknown | |
| Rocksford Post Office (historical) | Rocksford Post Office (historical) | Tuscarawas | Unknown | |
| Fiat Post Office (historical) | Fiat Post Office (historical) | Tuscarawas | 1099 | Baltic |
| Gilmore Post Office (historical) | Gilmore Post Office (historical) | Tuscarawas | 1227 | Gnadenhutten |
| Hartwood Post Office (historical) | Hartwood Post Office (historical) | Tuscarawas | 1047 | Gnadenhutten |
| Holly Post Office (historical) | Holly Post Office (historical) | Tuscarawas | 1083 | Baltic |
| New Cumberland Post Office (historical) | New Cumberland Post Office (historical) | Tuscarawas | 932 | Mineral City |
| Parral Post Office (historical) | Parral Post Office (historical) | Tuscarawas | 896 | Dover |
| Peoli Post Office (historical) | Peoli Post Office (historical) | Tuscarawas | 1122 | Birmingham |
| Rock Post Office (historical) | Rock Post Office (historical) | Tuscarawas | 915 | Tippecanoe |
| Rockford Post Office (historical) | Rockford Post Office (historical) | Tuscarawas | 1040 | Uhrichsville |
| Weathersfield Post Office (historical) | Weathersfield Post Office (historical) | Trumbull | Unknown | |
| Dover Post Office | Dover Post Office | Tuscarawas | 892 | Dover |
| Eastport Post Office (historical) | Eastport Post Office (historical) | Tuscarawas | 860 | Uhrichsville |
| Rush Post Office (historical) | Rush Post Office (historical) | Tuscarawas | 883 | Tippecanoe |
| Joyce Post Office (historical) | Joyce Post Office (historical) | Tuscarawas | 925 | Stone Creek |
| Baltic Post Office | Baltic Post Office | Tuscarawas | 1043 | Baltic |
| Blackband Post Office (historical) | Blackband Post Office (historical) | Tuscarawas | 902 | Stone Creek |
| Blake Mills Post Office (historical) | Blake Mills Post Office (historical) | Tuscarawas | Unknown | |
| Yorktown Post Office (historical) | Yorktown Post Office (historical) | Tuscarawas | 912 | Stone Creek |
| Roxford Post Office (historical) | Roxford Post Office (historical) | Tuscarawas | Unknown | |
| Beach Grove Post Office (historical) | Beach Grove Post Office (historical) | Union | Unknown | |
| Steam Furnace Post Office (historical) | Steam Furnace Post Office (historical) | Tuscarawas | Unknown | |
| Tabor Post Office (historical) | Tabor Post Office (historical) | Tuscarawas | Unknown | |
| Tracy Post Office (historical) | Tracy Post Office (historical) | Tuscarawas | Unknown | |
| Roswell Post Office (historical) | Roswell Post Office (historical) | Tuscarawas | 958 | Uhrichsville |
| Allen Centre Post Office (historical) | Allen Centre Post Office (historical) | Union | 1053 | Milford Center |
| Arbela Post Office | Arbela Post Office | Union | 988 | York Center |
| Arnold Post Office (historical) | Arnold Post Office (historical) | Union | 961 | Marysville |
| Bokes Creek Post Office (historical) | Bokes Creek Post Office (historical) | Union | Unknown | |
| Broadway Post Office | Broadway Post Office | Union | 1020 | Peoria |
| Buck Run Post Office (historical) | Buck Run Post Office (historical) | Union | Unknown | |
| Byhalia Post Office (historical) | Byhalia Post Office (historical) | Union | 1030 | York Center |
| Chuckery Post Office (historical) | Chuckery Post Office (historical) | Union | 981 | Plumwood |
| Claiborne Post Office (historical) | Claiborne Post Office (historical) | Union | 978 | Richwood |
| Coberly's Post Office (historical) | Coberly's Post Office (historical) | Union | Unknown | |
| Darby Plains Post Office (historical) | Darby Plains Post Office (historical) | Union | Unknown | |
| Irwin Post Office | Irwin Post Office | Union | 1007 | Plumwood |
| Jerome Post Office (historical) | Jerome Post Office (historical) | Union | 978 | Shawnee Hills |
| Lunda Post Office (historical) | Lunda Post Office (historical) | Union | 1093 | East Liberty |
| New California Post Office (historical) | New California Post Office (historical) | Union | 997 | Shawnee Hills |
| Peoria Post Office (historical) | Peoria Post Office (historical) | Union | 1027 | Peoria |
| Pharisburg Post Office (historical) | Pharisburg Post Office (historical) | Union | 955 | Magnetic Springs |
| Pottersburg Post Office (historical) | Pottersburg Post Office (historical) | Union | 1086 | East Liberty |
| Beach Grove Post Office (historical) | Beach Grove Post Office (historical) | Union | Unknown | |
| Raymond Post Office | Raymond Post Office | Union | 1070 | Peoria |
| Rushcreek Post Office (historical) | Rushcreek Post Office (historical) | Union | Unknown | |
| Taylor Centre Post Office (historical) | Taylor Centre Post Office (historical) | Union | 1014 | Peoria |
| Watkins Post Office (historical) | Watkins Post Office (historical) | Union | 961 | Shawnee Hills |
| Zoar Post Office | Zoar Post Office | Tuscarawas | 906 | Dover |
| Zoarsville Post Office | Zoarsville Post Office | Tuscarawas | 922 | Dover |
| Bernice Post Office (historical) | Bernice Post Office (historical) | Tuscarawas | 817 | Newcomerstown |
| Midvale Post Office | Midvale Post Office | Tuscarawas | 853 | Uhrichsville |
| Abanaka Post Office (historical) | Abanaka Post Office (historical) | Tuscarawas | 830 | Glenmore |
| Abanaka Post Office (historical) | Abanaka Post Office (historical) | Van Wert | 830 | Glenmore |
| Blacklys Corners Post Office (historical) | Blacklys Corners Post Office (historical) | Van Wert | Unknown | |
| Buena Post Office (historical) | Buena Post Office (historical) | Van Wert | 807 | Van Wert |
| Cavett Post Office (historical) | Cavett Post Office (historical) | Van Wert | 751 | Scott |
| Converse Post Office (historical) | Converse Post Office (historical) | Van Wert | 814 | Elgin |
| Dasie Post Office (historical) | Dasie Post Office (historical) | Van Wert | Unknown | |
| Dixon Post Office (historical) | Dixon Post Office (historical) | Van Wert | 791 | Dixon |
| Dull Post Office (historical) | Dull Post Office (historical) | Van Wert | 823 | Glenmore |
| Elgin Post Office | Elgin Post Office | Van Wert | 810 | Elgin |
| Frances Post Office (historical) | Frances Post Office (historical) | Van Wert | Unknown | |
| Glenmoore Post Office (historical) | Glenmoore Post Office (historical) | Van Wert | Unknown | |
| Glenmore Post Office (historical) | Glenmore Post Office (historical) | Van Wert | 814 | Glenmore |
| Hoaglin Post Office (historical) | Hoaglin Post Office (historical) | Van Wert | 741 | Wetsel |
| Hutchinson Post Office (historical) | Hutchinson Post Office (historical) | Van Wert | Unknown | |
| Leslie Post Office (historical) | Leslie Post Office (historical) | Van Wert | Unknown | |
| Liggett Post Office (historical) | Liggett Post Office (historical) | Van Wert | Unknown | |
| Middle Point Post Office | Middle Point Post Office | Van Wert | 778 | Middle Point |
| Monticellow Post Office (historical) | Monticellow Post Office (historical) | Van Wert | 843 | Elgin |
| Schumm Post Office (historical) | Schumm Post Office (historical) | Van Wert | 840 | Glenmore |
| Seamersville Post Office (historical) | Seamersville Post Office (historical) | Van Wert | 745 | Wetsel |
| Sport Post Office (historical) | Sport Post Office (historical) | Van Wert | Unknown | |
| Tokio Post Office (historical) | Tokio Post Office (historical) | Van Wert | Unknown | |
| Tully Post Office (historical) | Tully Post Office (historical) | Van Wert | Unknown | |
| Venedocia Post Office (historical) | Venedocia Post Office (historical) | Van Wert | 804 | Middle Point |
| Watt Post Office (historical) | Watt Post Office (historical) | Van Wert | Unknown | |
| Wetsel Post Office (historical) | Wetsel Post Office (historical) | Van Wert | 735 | Wetsel |
| Wise Post Office (historical) | Wise Post Office (historical) | Van Wert | Unknown | |
| Wolfcale Post Office (historical) | Wolfcale Post Office (historical) | Van Wert | 804 | Dixon |
| Willshire Post Office | Willshire Post Office | Van Wert | 797 | Willshire |
| Wren Post Office | Wren Post Office | Van Wert | 810 | Wren |
| Alaska Post Office (historical) | Alaska Post Office (historical) | Van Wert | Unknown | |
| Convoy Post Office | Convoy Post Office | Van Wert | 781 | Convoy |
| Shasta Post Office (historical) | Shasta Post Office (historical) | Van Wert | 807 | Van Wert |
| Ohio City Post Office | Ohio City Post Office | Van Wert | 820 | Van Wert |
| College Hill Station Cincinnati Post Office | College Hill Station Cincinnati Post Office | Hamilton | 889 | Cincinnati West |
| Cumminsville Station Cincinnati Post Office | Cumminsville Station Cincinnati Post Office | Hamilton | 502 | Cincinnati West |
| Groesbeck Branch Cincinnati Post Office | Groesbeck Branch Cincinnati Post Office | Hamilton | 869 | Cincinnati West |
| Mount Healthy Branch Cincinnati Post Office | Mount Healthy Branch Cincinnati Post Office | Hamilton | 853 | Cincinnati West |
| Westwood Station Cincinnati Post Office | Westwood Station Cincinnati Post Office | Hamilton | 906 | Cincinnati West |
| Shelby Post Office | Shelby Post Office | Richland | 1109 | Shelby |