Janesville, WI ZIP Codes

Total ZIPs

72,323

Total Population

ZIP Codes in Janesville, WI

ZIP Code	Population	Density	Timezone
53546	30,648	143	America/Chicago
53545	23,117	360	America/Chicago
53548	18,558	100	America/Chicago

All data sourced from the U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023).

PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.