U.S. postal lookup

U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

42,735 verified records
All states and U.S. territories
Maps and coordinates
State directory

Wisconsin ZIP Codes

Complete postal directory, details, and geographic map for the State of Wisconsin.

State ZIP Code City County Area Codes
WI 53172 South Milwaukee Milwaukee County 414
WI 53176 Springfield Walworth County 262
WI 53177 Sturtevant Racine County 262
WI 53178 Sullivan Jefferson County 262
WI 53179 Trevor Kenosha County 224, 262, 847
WI 53181 Twin Lakes Kenosha County 224, 262, 779, 815, 847
WI 53182 Union Grove Racine County 262
WI 53183 Wales Waukesha County 262
WI 53184 Walworth Walworth County 262, 779, 815
WI 53185 Waterford Racine County 262
Page 14 of 90

Geographic Map of Wisconsin

Postal context

About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.