Janesville, WI ZIP codes

4 ZIP/ZCTAs intersecting this Census place in Rock County.

ACS 2023 population

65,813

Median household income

$71,664

Median home value

$209,700

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: Census place Janesville (GEOID 5537825). Methodology

Combined population of ZIP/ZCTAs intersecting this place: 85,396 (4 ZIPs).

Combined population of ZIP/ZCTAs intersecting this place. Each intersecting ZIP contributes its full ZCTA population; overlap percents are descriptive only. This is not the Census place ACS headline above. Methodology

Map of Janesville, WI

Census place boundary and intersecting ZIP Code Tabulation Areas for Janesville, WI — Census place boundary for Janesville, WI. Intersecting ZCTAs may extend past the city limit. Not a USPS city limit. Boundaries: U.S. Census Bureau. Methodology · Data sources

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ZIP/ZCTA overlap with Janesville

Population overlap

Share of each ZIP/ZCTA’s population located within Janesville, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.

5354590.4%
USPS primary city
5354688.4%
USPS primary city
5354880.8%
USPS primary city
5356312.4%

ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology

ZIP codes intersecting Janesville

ZIP	City	County	Population	Income
53545	Janesville	Rock County	23,937	$70,730
53546	Janesville	Rock County	29,482	$73,430
53548	Janesville	Rock County	20,509	$74,696
53563	Milton	Rock County	11,468	$89,397

USPS associates these ZIPs with Janesville

These codes list Janesville as a primary or acceptable city. They are not used for the ACS headline.

ZIP	City	County	Population	Income
53547	Janesville	Rock County	903	—