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 54941 Green Lake Green Lake County 920
WI 54942 Greenville Outagamie County 920
WI 54943 Hancock Waushara County 534, 608, 715, 920
WI 54944 Hortonville Outagamie County 920
WI 54945 Iola Waupaca County 534, 715, 920
WI 54946 King Waupaca County 534, 715
WI 54947 Larsen Winnebago County 920
WI 54948 Leopolis Shawano County 534, 715
WI 54949 Manawa Waupaca County 534, 715, 920
WI 54950 Marion Waupaca County 534, 715
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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.