St. Croix County, Wisconsin ZIP Codes

11 ZIP Codes

Zip Code
City
Population ↓
54016Hudson33,398
54017New Richmond20,366
54025Somerset7,612
54002Baldwin6,872
54023Roberts4,620
54015Hammond4,086
54013Glenwood City3,443
54028Woodville2,574
54082Houlton2,190
54007Deer Park1,175
54027Wilson1,154

Overview of ZIP Codes in St. Croix County

ZCTAs are geographic areas created by the US Census Bureau to approximate the delivery areas of ZIP Codes for statistical analysis. While ZCTAs use the same five-digit codes as ZIP Codes, they represent defined geographic areas that may not exactly match the mail delivery routes of ZIP Codes.
11
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 11 ZCTAs in St. Croix County, Wisconsin (US Census).

Sources

  1. US Census: 2025 Gazetteer Files
  2. US Census: ZIP Code Tabulation Areas (ZCTAs)

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