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 54626 Eastman Crawford County 563, 608
WI 54627 Ettrick Trempealeau County 608
WI 54628 Ferryville Crawford County 608
WI 54629 Fountain City Buffalo County 507, 608
WI 54630 Galesville Trempealeau County 608
WI 54631 Gays Mills Crawford County 608
WI 54632 Genoa Vernon County 507, 608
WI 54634 Hillsboro Vernon County 608
WI 54635 Hixton Jackson County 534, 715
WI 54636 Holmen La Crosse County 608
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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.