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Wisconsin Zip Codes



Wisconsin Wisconsin is a state located in the north-central United States and is part of the Midwest and Great Lakes regions. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin is the 23rd most extensive and the 20th most populous of the 50 United States. Wisconsin s capital is Madison, and its largest city is Milwaukee. The state is divided into 72 counties.

State Zip Code City County Area Codes
WI 54017 New Richmond St. Croix County 534, 715
WI 54020 Osceola Polk County 534, 651, 715
WI 54021 Prescott Pierce County 534, 651, 715
WI 54022 River Falls Pierce County 534, 651, 715
WI 54023 Roberts St. Croix County 534, 715
WI 54024 Saint Croix Falls Polk County 534, 651, 715
WI 54025 Somerset St. Croix County 534, 651, 715
WI 54026 Star Prairie Polk County 534, 715
WI 54027 Wilson St. Croix County 534, 715
WI 54028 Woodville St. Croix County 534, 715
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Map of Wisconsin

ZIP codes are a system of postal codes used by the United States Postal Service (USPS) since 1963. The term ZIP, an acronym for Zone Improvement Plan, is properly written in capital letters and was chosen to suggest that the mail travels more efficiently, and therefore more quickly, when senders use the code in the postal address. The basic format consists of five decimal numerical digits. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the ZIP code, a hyphen, and four more digits that determine a more precise location than the ZIP code alone. The term ZIP code was originally registered as a servicemark (a type of trademark) by the U.S. Postal Service, but its registration has since expired.

ZIP codes designate only delivery points within the United States and its dependencies, as well as locations of its armed forces. There are no ZIP codes reserved for designating mail bound for foreign destinations (with the exception of U.S. military units stationed outside of the United States), and therefore, international outbound mail should not include a ZIP code in the delivery address. The last line of a foreign address must only show the name of the country of destination.

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