Mason city, Ohio
Official LSAD Designation: Mason city • Census GEOID: 3948188
• Warren County
Demographics & Population Profile
Population and demographics for Mason city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 35,834 | — | 2025 | Census |
| Median Age | 42.4 yrs | ±1.5 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 13,502 | ±536 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).