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	53570	Monticello	Green County	`608`
WI	53571	Morrisonville	Dane County	`608`
WI	53572	Mount Horeb	Dane County	`608`
WI	53573	Muscoda	Grant County	`608`
WI	53574	New Glarus	Green County	`608`
WI	53575	Oregon	Dane County	`608`
WI	53576	Orfordville	Rock County	`608`
WI	53577	Plain	Sauk County	`608`
WI	53578	Prairie Du Sac	Sauk County	`608`
WI	53579	Reeseville	Dodge 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.