U.S. POSTAL CODE DIRECTORY

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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 53511 Beloit Rock County 608, 779, 815
WI 53512 Beloit Rock County 608
WI 53515 Black Earth Dane County 608
WI 53516 Blanchardville Lafayette County 608
WI 53517 Blue Mounds Dane County 608
WI 53518 Blue River Richland County 608
WI 53520 Brodhead Green County 608, 779, 815
WI 53521 Brooklyn Dane County 608
WI 53522 Browntown Green County 608, 779, 815
WI 53523 Cambridge Dane County 608, 920
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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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