St. Anthony city, Idaho
Official LSAD Designation: St. Anthony city • Census GEOID: 1671020
• Fremont County
Demographics & Population Profile
Population and demographics for St. Anthony city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 3,990 | — | 2025 | Census |
| Median Age | 32.4 yrs | ±2.7 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 1,258 | ±133 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).