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 53580 Rewey Iowa County 608
WI 53581 Richland Center Richland County 608
WI 53582 Ridgeway Iowa County 608
WI 53583 Sauk City Sauk County 608
WI 53584 Sextonville Richland County 608
WI 53585 Sharon Walworth County 262, 608, 779, 815
WI 53586 Shullsburg Lafayette County 608, 779, 815
WI 53587 South Wayne Lafayette County 608, 779, 815
WI 53588 Spring Green Sauk County 608
WI 53589 Stoughton Dane County 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.