Idaho Falls city, Idaho
Official LSAD Designation: Idaho Falls city • Census GEOID: 1639700
• Bonneville County
Demographics & Population Profile
Population and demographics for Idaho Falls city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 71,785 | — | 2025 | Census |
| Median Age | 33.7 yrs | ±0.8 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 24,728 | ±522 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).