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 53919 Brandon Fond du Lac County 920
WI 53920 Briggsville Marquette County 608
WI 53922 Burnett Dodge County 920
WI 53923 Cambria Columbia County 608, 920
WI 53924 Cazenovia Richland County 608
WI 53925 Columbus Columbia County 608, 920
WI 53926 Dalton Green Lake County 608, 920
WI 53927 Dellwood Adams County 608
WI 53928 Doylestown Columbia County 920
WI 53929 Elroy Juneau 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.