There are 11 zip codes in St. Croix County, Wisconsin. The most populated is 54016, located in Hudson. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
54016Hudson33,465
54017New Richmond19,652
54025Somerset7,200
54002Baldwin6,791
54023Roberts4,715
54015Hammond3,863
54013Glenwood City3,428
54028Woodville2,675
54082Houlton1,805
54027Wilson1,107
54007Deer Park1,042

St. Croix County, Wisconsin Zip Codes by Population (2024)