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 53001 Adell Sheboygan County 920
WI 53002 Allenton Washington County 262, 920
WI 53003 Ashippun Dodge County 920
WI 53004 Belgium Ozaukee County 262, 920
WI 53005 Brookfield Waukesha County 262, 414
WI 53006 Brownsville Dodge County 920
WI 53007 Butler Waukesha County 262, 414
WI 53008 Brookfield Waukesha County 262
WI 53010 Campbellsport Fond du Lac County 262, 920
WI 53011 Cascade Sheboygan 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.