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.

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Wisconsin ZIP Codes

Complete postal directory, details, and geographic map for the State of Wisconsin.

State ZIP Code City County Area Codes
WI 54837 Frederic Polk County 534, 715
WI 54838 Gordon Douglas County 534, 715
WI 54839 Grand View Bayfield County 534, 715
WI 54840 Grantsburg Burnett County 320, 534, 651, 715
WI 54841 Haugen Barron County 534, 715
WI 54842 Hawthorne Douglas County 534, 715
WI 54843 Hayward Sawyer County 534, 715
WI 54844 Herbster Bayfield County 534, 715
WI 54845 Hertel Burnett County 534, 715
WI 54846 High Bridge Ashland 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.