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Rock County
Sign in to saveAlso known as Rock County, Wisconsin, Rock County, WI
county in Wisconsin, United States
Key facts
- Country
- United States
- State
- Wisconsin
- Named after
- Rock River
- Seat
- Janesville
- Largest city
- Janesville
- Total
- 726 sq mi (1,880 km )
- Land
- 718 sq mi (1,860 km )
- Water
- 8.0 sq mi (21 km ) 1.1%
- Estimate 2025
- 166,472
- Density
- 228/sq mi (88.0/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
- Congressional districts
- 1st , 2nd
- Website
- www .co .rock .wi .us
via Wikipedia infobox
Wikidata facts
- Named after
- Rock River
- Country
- United States
- Located in
- Wisconsin
- Contains
- Brodhead
- Capital
- Janesville
- Population
- 163687
- Area
- 718.14
- Elevation
- 807
- Shares border with
- Winnebago County
- Official website
- www.co.rock.wi.us
- Image
- Janesville June 2024 118 (Rock County Courthouse).jpg
- Households
- 65237
Show 9 more facts
- category for people born here
- Category:Births in Rock County, Wisconsin
- category of associated people
- Category:People from Rock County, Wisconsin
- Commons category
- Rock County, Wisconsin
- topic's main category
- Category:Rock County, Wisconsin
- inception
- 1839-00-00
- different from
- Rock Island County
- water as percent of area
- 1.1
- native label
- Rock County
- per capita income
- 29924
Sources (12)
via Wikidata · CC0
~8 min read
Encyclopedic overview
Rock County is a county in the U.S. state of Wisconsin. As of the 2020 census, the population was 163,687. Its county seat is Janesville. Rock County comprises the Janesville–Beloit metropolitan statistical area and is included in the Madison–Janesville–Beloit combined statistical area.
History
Excerpted from Wikipedia’s “Rock County” article, available under the CC BY-SA 4.0 licence.