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
All states and U.S. territories
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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 53808 Dickeyville Grant County 608
WI 53809 Fennimore Grant County 608
WI 53810 Glen Haven Grant County 563, 608
WI 53811 Hazel Green Grant County 563, 608, 779, 815
WI 53812 Kieler Grant County 608
WI 53813 Lancaster Grant County 608
WI 53816 Mount Hope Grant County 608
WI 53817 Patch Grove Grant County 608
WI 53818 Platteville Grant County 608
WI 53820 Potosi Grant County 563, 608
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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.