St. Croix County ZIP Codes
Wisconsin, United States · 11 codes
St. Croix County in Wisconsin has 11 ZIP codes, from 54002 to 54082, serving 11 places.
ZIP codes in St. Croix
Frequently asked questions
What is the ZIP code of St. Croix?
St. Croix has 11 ZIP codes, from 54002 to 54082. The table lists the places each one serves.
How many places are listed in St. Croix County?
11 places.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.