Find the last 4 digits (ZIP+4) for an address in 53545

ZIP 53545, Janesville, WI is filled in. Just type the street address.

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ZIP Code 53545 – Janesville, WI

Janesville, Wisconsin · Rock County · Central time

ZIP code53545
CityJanesville
StateWisconsin
CountyRock County
Population24,703
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area22.51 sq mi
Center (lat, long)42.7387, -89.0402

Area codes in this area

353608

These are the area codes that most often serve ZIP 53545 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

53547 Janesville · 0.8 mi53548 Janesville · 5.7 mi53563 Milton · 6.1 mi53546 Janesville · 7.6 mi53534 Edgerton · 8.8 mi53501 Afton · 9.5 mi53542 Hanover · 9.5 mi53537 Footville · 9.8 mi

About ZIP 53545

ZIP code 53545 is assigned to Janesville, Wisconsin. It lies in Rock County. Its Census area covers about 22.51 square miles of land. The closest neighboring ZIP is 53547 (Janesville), about 0.8 miles away.

Every address in 53545 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources