Lewiston city, Idaho
Official LSAD Designation: Lewiston city • Census GEOID: 1646540
• Nez Perce County
Demographics & Population Profile
Population and demographics for Lewiston city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 34,717 | — | 2025 | Census |
| Median Age | 39.8 yrs | ±0.7 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 14,235 | ±269 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).