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 53012 Cedarburg Ozaukee County 262
WI 53013 Cedar Grove Sheboygan County 262, 920
WI 53014 Chilton Calumet County 920
WI 53015 Cleveland Manitowoc County 920
WI 53016 Clyman Dodge County 920
WI 53017 Colgate Washington County 262
WI 53018 Delafield Waukesha County 262
WI 53019 Eden Fond du Lac County 920
WI 53020 Elkhart Lake Sheboygan County 920
WI 53021 Fredonia Ozaukee County 262, 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.