ZIP Code 50647
About Janesville
Janesville is a city in Black Hawk and Bremer counties in the US state of Iowa. The population was 1,034 at the 2020 census. It is part of the Waterloo–Cedar Falls Metropolitan Statistical Area.
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Area Profile
US Census (ACS 5-year · Gazetteer)
2,073
population
$98,052
median household income
68
people / sq mi
$278,200
median home value
$607
median gross rent
48.1
median age
913
housing units
817
households
30.4
land area (sq mi)