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
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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 53127 Genesee Depot Waukesha County 262
WI 53128 Genoa City Walworth County 262, 779, 815
WI 53129 Greendale Milwaukee County 414
WI 53130 Hales Corners Milwaukee County 414
WI 53132 Franklin Milwaukee County 414
WI 53137 Helenville Jefferson County 262, 920
WI 53138 Honey Creek Walworth County 262
WI 53139 Kansasville Racine County 262
WI 53140 Kenosha Kenosha County 262
WI 53141 Kenosha Kenosha County 262
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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.