Janesville, Iowa

Janesville, Iowa
Downtown Janesville
Nickname: 
Oldest City in Bremer County
Location of Janesville, Iowa
Coordinates: 42°38′46″N 92°27′45″W / 42.64611°N 92.46250°W / 42.64611; -92.46250
CountryUSA
StateIowa
CountiesBremer, Black Hawk
IncorporatedOctober 29, 1895
Government
  TypeCity Council
Area
  Total
1.47 sq mi (3.81 km2)
  Land1.41 sq mi (3.66 km2)
  Water0.06 sq mi (0.15 km2)
Elevation
902 ft (275 m)
Population
 (2020)
  Total
1,034
  Density731.26/sq mi (282.39/km2)
Time zoneUTC-6 (Central (CST))
  Summer (DST)UTC-5 (CDT)
ZIP code
50647
Area code319
FIPS code19-39405
GNIS feature ID2395456

Janesville is a city in Black Hawk and Bremer counties in the U.S. state of Iowa. The population was 1034 at the 2020 census. It is part of the WaterlooCedar Falls Metropolitan Statistical Area.