Other Counties in Colorado:
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| General Information: | |
| Name: | Jefferson |
| Land Area: | 774.2 |
| State Name: | Colorado |
| Males: | 261326 |
| Females : | 264004 |
| Total Population 2004: | 540905 |
| Total Population 2000: | 525330 |
| 2004 Population per Sq. Miles: | 698.7 |
| 2004 Population per Sq. Miles: | 678.6 |
Map of Jefferson County:
| Races in Jefferson County: | |
| White: | 475892 |
| Black/African American: | 4663 |
| Hispanic: | 52272 |
| Asian: | 11997 |
| American Indian & Alaska Native: | 3968 |
| Native Hawaian Pacific Islander: | 409 |
| Multi Race: | 11421 |
| Ohter Race: | 16980 |
| Population by Age in Jefferson County: | |
| Under 5 years: | 33133 |
| 5 to 17 Years: | 99871 |
| 18 to 21 years: | 24565 |
| 22 to 29 years: | 51534 |
| 30 to 39 yeras: | 84694 |
| 40 to 49 years: | 95830 |
| 50 to 64 years: | 84976 |
| 64 and over: | 50727 |
| Median Age in Jefferson County: | |
| Average Median Age: | 36.7 |
| Male Median Age: | 35.8 |
| Female Median Age: | 37.6 |
Cities in Colorado (With population 10,000 or more):
| Arvada (102153) | Aurora (276393) | Berkley (10743) | Black Forest (13247) | Boulder (94673) |
| Brighton (20905) | Broomfield (38272) | Canon City (15431) | Castle Rock (20224) | Castlewood (25567) |
| Cimarron Hills (15194) | Clifton (17345) | Colorado Springs (360890) | Columbine (24095) | Commerce City (20991) |
| Denver (554636) | Durango (13922) | Englewood (31727) | Federal Heights (12065) | Fort Carson (10566) |
| Fort Collins (118652) | Fort Morgan (11034) | Fountain (15197) | Golden (17159) | Grand Junction (41986) |
| Greeley (76930) | Greenwood Village (11035) | Highlands Ranch (70931) | Ken Caryl (30887) | Lafayette (23197) |
| Lakewood (144126) | Littleton (40340) | Longmont (71093) | Louisville (18937) | Loveland (50608) |
| Montrose (12344) | Northglenn (31575) | Parker (23558) | Pueblo (102121) | Pueblo West (16899) |
| Security-Widefield (29845) | Sherrelwood (17657) | Southglenn (43520) | Sterling (11360) | Thornton (82384) |
| Welby (12973) | Westminster (100940) | Wheat Ridge (32913) |