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 53110 Cudahy Milwaukee County 414
WI 53114 Darien Walworth County 262, 608
WI 53115 Delavan Walworth County 262, 608
WI 53118 Dousman Waukesha County 262
WI 53119 Eagle Waukesha County 262
WI 53120 East Troy Walworth County 262
WI 53121 Elkhorn Walworth County 262, 608
WI 53122 Elm Grove Waukesha County 262, 414
WI 53125 Fontana Walworth County 262
WI 53126 Franksville Racine County 262, 414
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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.