Janesville (town), Wisconsin

Town of Janesville, Wisconsin
Town hall
Location in Rock County and the state of Wisconsin.
Coordinates: 42°43′32″N 89°4′34″W / 42.72556°N 89.07611°W / 42.72556; -89.07611
Country United States
State Wisconsin
CountyRock
Area
 • Total
28.6 sq mi (74.0 km2)
 • Land28.1 sq mi (72.7 km2)
 • Water0.46 sq mi (1.2 km2)
Elevation
863 ft (263 m)
Population
 (2020)
 • Total
3,665
 • Density134/sq mi (51.6/km2)
Time zoneUTC-6 (Central (CST))
 • Summer (DST)UTC-5 (CDT)
Area code608
FIPS code55-37850
GNIS feature ID1583449
Websitetownofjanesville.org

The Town of Janesville is a civil township in Rock County, Wisconsin, United States. The population was 3,665 at the 2020 census. The City of Janesville is southeast of and adjacent to the town. The unincorporated communities of Anderson and Leyden are in the town.