St. Croix County WI United States
| County FIPS | 55109 |
| Largest City | River Falls |
| State | Wisconsin |
| Latitude | 45.0340 |
| Longitude | -92.4526 |
| Population | 96,033 |
| Density | 133.01 people per square mile |
| Time Zone | America/Chicago |
Median household: $103,046
Median individual: $51,577
Mode: 92.1% White
Median house value: $377,596.0
Median: 40.4 years old
With at least college degree: 39.4%
With STEM degree: 44.5%
Never married: 27.3%
Unemployed: 2.6%
All data comes from the SimpleMaps US Counties Database, 2026.
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