Lost River city, Idaho
Official LSAD Designation: Lost River city • Census GEOID: 1647890
• Custer County
Demographics & Population Profile
Population and demographics for Lost River city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population | 55 | ±38 | 2020-2024 | Census ACS 5-Year 2024 |
| Median Age | 76.9 yrs | ±14.3 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 11 | ±17 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).