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 54156 Pembine Marinette County 534, 715, 906
WI 54157 Peshtigo Marinette County 534, 715, 920
WI 54159 Porterfield Marinette County 534, 715, 906
WI 54160 Potter Calumet County 920
WI 54161 Pound Marinette County 534, 715, 920
WI 54162 Pulaski Brown County 534, 715, 920
WI 54165 Seymour Outagamie County 534, 715, 920
WI 54166 Shawano Shawano County 534, 715, 920
WI 54169 Sherwood Calumet County 920
WI 54170 Shiocton Outagamie County 534, 715, 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.