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City Profile

Janesville, Wisconsin

Population: 65,615 · 4 ZIP codes

Demographics

Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.

People
Total population
65,615
People
Median age
40.7
Housing
Total households
28,326
Income
Median household income
$73,446
Housing
Total housing units
29,330
Employment
Employment rate
62.8%
Education
Bachelor’s degree or higher
27.3%
Healthcare
Insured population
94.4%
City details
Local time 02:24:36(CT)
LocationJanesville, WI
Population (ZIP areas)73,741(sum of local ZIP code populations)
Total ZIP codes4total
ZIP codes (by type)
3 Standard1 PO Box
CountyRock
Area code
TimezoneCentral Time (CT)
Coordinates42.67871098302097, -89.03664916321671
Land area178.6 sq miles(462,552,572 m²)

Map of Janesville, Wisconsin with ZIP codes

Map of Janesville, Wisconsin and ZIP codes

ZIP Codes in Janesville

Explore the ZIP codes that make up Janesville. Analyze key demographics and population stats for the region using the comprehensive table below.

ZIPType
Median incomeHousehold
Population (ZIP)
53545Standard$73,88923,318
53546Standard$75,82531,190
53547PO BOX
53548Standard$76,86919,233

Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.

ZIP type legend

  • Standard: residential and business delivery areas
  • PO BOX: primarily post office boxes; population may be unavailable
  • Unique: high-volume organizations (universities, agencies, etc.)

Nearby cities

Other cities near Janesville, WI.

Data Sources & Citations

The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:

  • United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
  • United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS