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 54913 Appleton Outagamie County 920
WI 54914 Appleton Outagamie County 920
WI 54915 Appleton Outagamie County 920
WI 54919 Appleton Outagamie County 920
WI 54921 Bancroft Portage County 534, 715
WI 54922 Bear Creek Outagamie County 534, 715, 920
WI 54923 Berlin Green Lake County 920
WI 54926 Big Falls Waupaca County 534, 715
WI 54927 Butte Des Morts Winnebago County 920
WI 54928 Caroline Shawano 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.