Firth city, Idaho
Official LSAD Designation: Firth city • Census GEOID: 1627910
• Bingham County
Demographics & Population Profile
Population and demographics for Firth city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 545 | — | 2025 | Census |
| Median Age | 37.2 yrs | ±3.7 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 148 | ±37 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).