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	53525	Clinton	Rock County	`262, 608, 779, 815`
WI	53526	Cobb	Iowa County	`608`
WI	53527	Cottage Grove	Dane County	`608`
WI	53528	Cross Plains	Dane County	`608`
WI	53529	Dane	Dane County	`608`
WI	53530	Darlington	Lafayette County	`608`
WI	53531	Deerfield	Dane County	`608`
WI	53532	Deforest	Dane County	`608, 920`
WI	53533	Dodgeville	Iowa County	`608`
WI	53534	Edgerton	Rock County	`608, 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.