ZIP Code 53545

53545 is one of Wisconsin's ZIP codes, delivering to addresses in Janesville, Rock County.

City: Janesville
County: Rock County
State: Wisconsin
Prefix: 535xx

Where this code sits

53545 is part of the 535xx range, the group of codes handled by one mail processing centre. Janesville is served by 4 ZIP codes in total; the full list, with the county each falls in, is on the Janesville page.

Janesville Wisconsin ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 53545 delivers to without sharing its boundary.

ZIP codes nearest 53545

The ZIP codes whose reference points sit closest to 53545.
ZIP code	Distance	Delivers to
ZIP code 53547	0.7 mi	Janesville, WI
ZIP code 53546	5.0 mi	Janesville, WI
ZIP code 53563	5.4 mi	Milton, WI
ZIP code 53548	5.7 mi	Janesville, WI
ZIP code 53534	7.2 mi	Edgerton, WI
ZIP code 53501	9.1 mi	Afton, WI
ZIP code 53542	9.3 mi	Hanover, WI
ZIP code 53537	9.7 mi	Footville, WI

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 53545, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 53545. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.