Helena city, Montana
Official LSAD Designation: Helena city • Census GEOID: 3035600
• Lewis and Clark County
Demographics & Population Profile
Population and demographics for Helena city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 35,138 | — | 2025 | Census |
| Median Age | 40.5 yrs | ±1.4 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 15,774 | ±310 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).