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| General Information: | |
| Name: | Rock |
| Land Area: | 726.2 |
| State Name: | Wisconsin |
| Males: | 74980 |
| Females : | 77327 |
| Total Population 2004: | 155792 |
| Total Population 2000: | 152307 |
| 2004 Population per Sq. Miles: | 214.5 |
| 2004 Population per Sq. Miles: | 209.7 |
Map of Rock County:
| Races in Rock County: | |
| White: | 138610 |
| Black/African American: | 7048 |
| Hispanic: | 5953 |
| Asian: | 1191 |
| American Indian & Alaska Native: | 422 |
| Native Hawaian Pacific Islander: | 61 |
| Multi Race: | 2284 |
| Ohter Race: | 2691 |
| Population by Age in Rock County: | |
| Under 5 years: | 10263 |
| 5 to 17 Years: | 30103 |
| 18 to 21 years: | 7919 |
| 22 to 29 years: | 14885 |
| 30 to 39 yeras: | 23222 |
| 40 to 49 years: | 23561 |
| 50 to 64 years: | 22959 |
| 64 and over: | 19395 |
| Median Age in Rock County: | |
| Average Median Age: | 35.9 |
| Male Median Age: | 34.7 |
| Female Median Age: | 36.9 |