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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Wisconsin ZIP Codes

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

State ZIP Code City County Area Codes
WI 54929 Clintonville Waupaca County 534, 715, 920
WI 54930 Coloma Waushara County 534, 608, 715, 920
WI 54931 Dale Outagamie County 920
WI 54932 Eldorado Fond du Lac County 920
WI 54933 Embarrass Waupaca County 534, 715
WI 54934 Eureka Winnebago County 920
WI 54935 Fond Du Lac Fond du Lac County 920
WI 54936 Fond Du Lac Fond du Lac County 920
WI 54937 Fond Du Lac Fond du Lac County 920
WI 54940 Fremont Waupaca County 920
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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.