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Zip Code 53546 — Janesville, WI

53546 is a ZIP Code associated with Janesville, WI, located within Rock. The postal region supports an estimated population of 29,867 residents across Data Pending housing units, with a population density of 142.2 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (42.651260, -88.948540)

Data MetricLocal Statistic
Postal / Zip Code53546
Primary CityJanesville
State / ProvinceWI
CountyRock
Total Population29,867
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density142.2 people/sq mi
TimezoneAmerica/Chicago

How 53546 Compares

MetricZIP 53546Rock CountyWI State Average
Population29,867170,4145,914,913
Median IncomeData PendingN/AN/A
Population Density142.2 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 53505Avalon6.7 mi358N/A
Zip 53501Afton7.0 mi165N/A
Zip 53545Janesville7.1 mi24,703N/A
Zip 53525Clinton8.9 mi4,066N/A
Zip 53563Milton9.1 mi11,280N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →