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
All states and U.S. territories
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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 53930 Endeavor Marquette County 608
WI 53931 Fairwater Fond du Lac County 920
WI 53932 Fall River Columbia County 920
WI 53933 Fox Lake Dodge County 920
WI 53934 Friendship Adams County 608
WI 53935 Friesland Columbia County 920
WI 53936 Grand Marsh Adams County 608
WI 53937 Hillpoint Sauk County 608
WI 53939 Kingston Green Lake County 920
WI 53940 Lake Delton Sauk County 608
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Geographic Map of Wisconsin

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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.