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About Rock County
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.
Everything about Rock County →- Country
- United States
- Inception
- 1839, December 7, 1836
- Website
- http://www.co.rock.wi.us, https://www.co.rock.wi.us/