There are 14 zip codes in Polk County, Wisconsin. The most populated is 54020, located in Osceola. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
540207,880Osceola
540017,839Amery
540244,958Saint Croix Falls
548533,704Luck
548373,614Frederic
540053,051Clear Lake
548892,839Turtle Lake
548102,810Balsam Lake
540092,677Dresser
548242,211Centuria
540262,130Star Prairie
548581,539Milltown
54006791Cushing
54826692Comstock

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