Rock County, Wisconsin
Rock County: County in Wisconsin, United States
About
Rock County is a county located in the U.S. state of Wisconsin. As of the 2010 census, the population was 160,331. After 10 years in 2020 county had an estimated population of 163,084 inhabitants. Its county seat is Janesville. The county was created 188 years ago in 1836.
Quick Facts about Rock County
| Population : | 163,084 (2020) |
| Country : | United States of America |
| State : | Wisconsin (United States) |
| Different from : | Rock County, Rock Island County, Rock County |
| Water as percent of area : | 1.1% |
| Land as percent of area : | 98.9% |
| Named for : | Rock River, landscape |
| Altitude : | 2,648 feet / 807, 249 meters |
| Capital : | Janesville |
| Establishment : | January 01, 1970 |
| Time Zone : | America/Chicago |
| Local time : | 06:11:02 (21st December 2024) |
| Population growth : | 1.69% (2010-2020) |
Geography
Rock County is located at 42°40'16"N 89°4'18"W (42.6712200, -89.0715800). It has 7 neighbors: Boone County, Winnebago County, Dane County, Green County, Jefferson County, Walworth County and Washburn County.
Rock County map
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The largest city of Rock County is City of Janesville with a population of 64,128. Other cities include, Beloit population 7,716, Evansville population 5,556, Edgerton population 5,525 and Janesville population 3,612. See all Rock County cities & populated places.
Rock County Populated Places (more)
Cities, towns, neighborhoods & other populated places in Rock County.
| City Name | Population | Title |
|---|---|---|
| Beloit | 7,716 | City in Rock County, Wisconsin, United States |
| Evansville | 5,556 | City in Rock County, Wisconsin, United States |
| Edgerton | 5,525 | City in Rock County, Wisconsin, United States |
| Koshkonong | 3,782 | Civil town in Jefferson County, Wisconsin |
| Janesville | 3,612 | City in and county seat of Rock County, Wisconsin |
| Fulton | 3,435 | Town in Rock County, Wisconsin, United States |
| Milton | 3,126 | City in Rock County, Wisconsin |
| Newark | 1,617 | Civil town in Rock County, Wisconsin |
| Orfordville | 1,486 | Village in Rock County, Wisconsin |
| Clinton | 1,446 | Village in Rock County, Wisconsin, United States |
| Bergen | 1,364 | Unincorporated community in Rock County, Wisconsin |
| Fairfield | 1,104 | Civil town in Sauk County, Wisconsin |
| Footville | 822 | Village in Rock County, Wisconsin |
| Magnolia | 808 | Civil town in Rock County, Wisconsin |
| Johnstown | 791 | Town in Rock County, Wisconsin, United States |
| Tiffany | 650 | City in Wisconsin |
- Go to Official Website
- Go to Official Website
Official website of Rock County
Rock County has 7 neighbours.
- Boone County county in Illinois, United States
- Winnebago County county in Illinois, United States
- Dane County county in Wisconsin, United States
- Green County county in Wisconsin, United States
- Jefferson County county in Wisconsin, United States
- Walworth County county in Wisconsin, United States
- Washburn County county in Wisconsin, United States
- Janesville
Demographics
The population of Rock County increased by 1.69% in 10 years.
| Year | Population | % Change | Method |
| 2010 | 160,331 | - | census |
| 2011 | 159,867 | -0.29% | estimation process |
| 2012 | 160,065 | 0.12% | estimation process |
| 2013 | 160,341 | 0.17% | estimation process |
| 2014 | 160,920 | 0.36% | estimation process |
| 2015 | 161,006 | 0.05% | estimation process |
| 2016 | 161,320 | 0.19% | estimation process |
| 2017 | 162,205 | 0.55% | estimation process |
| 2018 | 162,874 | 0.41% | estimation process |
| 2019 | 163,354 | 0.29% | estimation process |
| 2020 | 163,084 | -0.17% | estimation process |
People born in Rock County (3)
People born in Rock County, including astronomer Olin J. Eggen, REcipient of the Navy Cross Frederick Curtice Davis, US Military Academy superintendent William Durward Connor, .
List
Other places with the same name (3)
- Rock County , Minnesota county in Minnesota, United States of America with a population of 9,301 people.
- Rock County , Nebraska county in Nebraska, United States with a population of 1,377 people.
Wisconsin Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Milwaukee County | 945,016 | County in Wisconsin, United States |
| Milwaukee | 589,067 | The thirtieth most populous city in the United States and the center of the Milwaukee metropolitan area. |
| Dane County | 552,536 | County in Wisconsin, United States |
| Waukesha County | 406,172 | County in Wisconsin, United States |
| Brown County | 264,610 | County in Texas, United States |
| Racine County | 195,802 | County in Wisconsin, United States |
| Outagamie County | 188,766 | County in Wisconsin, United States |
| Winnebago County | 171,631 | County in Wisconsin, United States |
| Kenosha County | 169,671 | County in Wisconsin, United States |
| Washington County | 136,445 | County in Wisconsin, United States |
| Marathon County | 135,593 | County in Wisconsin, United States |
| La Crosse County | 118,502 | County in Wisconsin, United States |
| Sheboygan County | 115,240 | County in Wisconsin, United States |
| Eau Claire County | 105,260 | County in Wisconsin, United States |
| Walworth County | 103,953 | County in Wisconsin, United States |
| Fond du Lac County | 102,902 | County in Wisconsin, United States |
