Lewistown city, Montana
Official LSAD Designation: Lewistown city • Census GEOID: 3043375
• Fergus County
Demographics & Population Profile
Population and demographics for Lewistown city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 6,179 | — | 2025 | Census |
| Median Age | 44.7 yrs | ±3.3 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 2,880 | ±152 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).