Rock County, Wisconsin

Rock County
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 / 42.67°N 89.07°W / 42.67; -89.07
Country United States
State Wisconsin
Founded1839
Named forRock River
SeatJanesville
Largest cityJanesville
Area
 • Total726 sq mi (1,880 km2)
 • Land718 sq mi (1,860 km2)
 • Water8.0 sq mi (21 km2)  1.1%
Population
 (2020)[1]
 • Total163,687
 • Density230/sq mi (87/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional districts1st, 2nd
Websitewww.co.rock.wi.us

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]

References

  1. ↑ 1.0 1.1 "QuickFacts: Rock County, Wisconsin". United States Census Bureau. Retrieved January 21, 2024.
  2. ↑ "Find a County". National Association of Counties. Retrieved June 7, 2011.
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