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 54670 Wilton Monroe County 608
WI 54701 Eau Claire Eau Claire County 534, 715
WI 54702 Eau Claire Eau Claire County 715
WI 54703 Eau Claire Eau Claire County 534, 715
WI 54720 Altoona Eau Claire County 534, 715
WI 54721 Arkansaw Pepin County 534, 715
WI 54722 Augusta Eau Claire County 534, 715
WI 54723 Bay City Pierce County 534, 651, 715
WI 54724 Bloomer Chippewa County 534, 715
WI 54725 Boyceville Dunn County 534, 715
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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.