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 53022 Germantown Washington County 262
WI 53023 Glenbeulah Sheboygan County 920
WI 53024 Grafton Ozaukee County 262
WI 53026 Greenbush Sheboygan County 920
WI 53027 Hartford Washington County 262, 920
WI 53029 Hartland Waukesha County 262
WI 53031 Hingham Sheboygan County 920
WI 53032 Horicon Dodge County 920
WI 53033 Hubertus Washington County 262
WI 53034 Hustisford Dodge 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.