Map of Rock County, Wisconsin

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, WI Metropolitan Statistical Area and is included in the Madison-Janesville-Beloit, WI Combined Statistical Area.

Rock County overview:
Name:Rock County
FIPS code:55-105
State:Wisconsin
Founded:1839
Named for:Rock River
Seat:Janesville
Largest city:Janesville
Total Area:726 sq mi (1,880 km²)
Land Area:718 sq mi (1,860 km²)
Total Population:163,687
Population Density:230/sq mi (87/km²)

Rock County location map. Where is Rock County?

Rock County location on the U.S. Map. Where is Rock County.
Location of Rock County in the the United States.
Rock County location on the Wisconsin map. Where is Rock County.
Location of Rock County in Wisconsin.

History

Rock County was created as a territorial county on December 7, 1836, from Milwaukee County and fully organized February 19, 1839. The county is named for the Rock River, which bisects the county from north to south.

Rock County Road Map

Rock CountyStreet Map.
Street map of Rock County, Wisconsin. Source: OpenStreetMap (OSM)

Geography

According to the U.S. Census Bureau, the county has a total area of 726 square miles (1,880 km), of which 718 square miles (1,860 km) is land and 8.0 square miles (21 km) (1.1%) is water.

Cook Memorial Arboretum, a natural area with birding and nature trails, is located northwest of Janesville. It is owned by the Janesville School District.

Rock County Topographic Map

Topographic Map of Rock County, Wisconsin
Rock County Topo map.

Rock County Satellite Map

Satellite Map of Rock County, Wisconsin
Rock County satellite map.

Rock County Outline Map

Outline Map of Rock County, Wisconsin
Rock County outline map.

See also

Map of Wisconsin State and its subdivision: Map of other states:
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