Rock County
Explore the Greater Janesville metro →
- Population
- 164,350
- Area
- 718.17 sq mi (1,860.04 km²), 7.99 sq mi water
- Median age
- 40.3
- Households
- 67,201
- Persons per household
- 2.4
- Median household income
- $75,673
- Median house value
- $231,600
Demographics: 2020–2024 ACS
Overnight
48°F
Partly Cloudy8% precip
Sunday
67°F
Sunny
Sunday Night
42°F
Clear
Monday
64°F
Sunny
Cities & Towns in Rock County
Avon TownBeloitBeloit TownBradford TownBrodheadCenter TownClintonClinton TownEdgertonEvansvilleFootvilleFultonFulton TownHanoverHarmony TownJanesvilleJanesville TownJohnstown TownLa Prairie TownLima TownMagnolia TownMiltonMilton TownNewark TownOrfordvillePlymouth TownPorter TownRock TownShopiereSpring Valley TownTurtle TownUnion Town