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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Wisconsin ZIP Codes

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

State ZIP Code City County Area Codes
WI 54216 Kewaunee Kewaunee County 920
WI 54217 Luxemburg Kewaunee County 920
WI 54220 Manitowoc Manitowoc County 920
WI 54221 Manitowoc Manitowoc County 920
WI 54226 Maplewood Door County 920
WI 54227 Maribel Manitowoc County 920
WI 54228 Mishicot Manitowoc County 920
WI 54229 New Franken Brown County 920
WI 54230 Reedsville Manitowoc County 920
WI 54232 Saint Nazianz Manitowoc County 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.