There are 22 zip codes in Grant County, Wisconsin. The most populated is 53818, located in Platteville. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
5381815,712Platteville
538136,211Lancaster
538055,613Boscobel
538094,721Fennimore
538074,315Cuba City
538113,197Hazel Green
535733,038Muscoda
538202,314Potosi
538061,604Cassville
535181,508Blue River
538041,346Bloomington
538011,034Bagley
53554983Livingston
53808936Dickeyville
53569907Montfort
53816905Mount Hope
53825468Stitzer
53827361Woodman
53810316Glen Haven
53812311Kieler
53817225Patch Grove
53802134Beetown
showing: 22 rows

Zip Codes in Grant County, Wisconsin by Population (2024)