St. Croix County, Wisconsin
11 ZIP codes · 722.16 sq mi of land · FIPS 55109
| Population | 96,033 |
|---|---|
| State | Wisconsin |
| FIPS code | 55109 |
| Time zone | Central |
| Land area | 722.16 sq mi |
| Center (lat, long) | 45.0290, -92.4473 |
Area codes in this area
These are the area codes that most often serve St. Croix County (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Cities and towns (largest first)
Hudson · 14,959BaldwinDeer ParkGlenwood CityHammondNew RichmondRobertsSomersetWilsonWoodvilleHoulton
ZIP codes in St. Croix County
54002 Baldwin54007 Deer Park54013 Glenwood City54015 Hammond54016 Hudson54017 New Richmond54023 Roberts54025 Somerset54027 Wilson54028 Woodville54082 Houlton
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.