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 53142 Kenosha Kenosha County 262
WI 53143 Kenosha Kenosha County 262
WI 53144 Kenosha Kenosha County 262
WI 53146 New Berlin Waukesha County 262
WI 53147 Lake Geneva Walworth County 262, 779, 815
WI 53148 Lyons Walworth County 262
WI 53149 Mukwonago Waukesha County 262
WI 53150 Muskego Waukesha County 262, 414
WI 53151 New Berlin Waukesha County 262, 414
WI 53152 New Munster Kenosha County 262
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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.