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 53073 Plymouth Sheboygan County 920
WI 53074 Port Washington Ozaukee County 262
WI 53075 Random Lake Sheboygan County 262, 920
WI 53076 Richfield Washington County 262
WI 53078 Rubicon Dodge County 262, 920
WI 53079 Saint Cloud Fond du Lac County 920
WI 53080 Saukville Ozaukee County 262
WI 53081 Sheboygan Sheboygan County 920
WI 53082 Sheboygan Sheboygan County 920
WI 53083 Sheboygan Sheboygan 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.