Rock County, Wisconsin
Rock County is a county in the U.S. state of Wisconsin. As of the 2020 census, the population was 163,687.[1] Its county seat is Janesville.[2]
Rock County | |
|---|---|
 Rock County Courthouse | |
 Location within the U.S. state of Wisconsin | |
 Wisconsin's location within the U.S. | |
| Coordinates: 42°40′N 89°04′W | |
| Country |  United States |
| State |  Wisconsin |
| Founded | 1839 |
| Named for | Rock River |
| Seat | Janesville |
| Largest city | Janesville |
| Area | |
| • Total | 726 sq mi (1,880 km2) |
| • Land | 718 sq mi (1,860 km2) |
| • Water | 8.0 sq mi (21 km2) 1.1% |
| Population | |
| • Total | 163,687 |
| • Density | 230/sq mi (87/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Congressional districts | 1st, 2nd |
| Website | www |
References
- "QuickFacts: Rock County, Wisconsin". United States Census Bureau. Retrieved January 21, 2024.
- "Find a County". National Association of Counties. Retrieved June 7, 2011.
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