Marietta city, Ohio
Official LSAD Designation: Marietta city • Census GEOID: 3947628
• Washington County
Demographics & Population Profile
Population and demographics for Marietta city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 13,053 | — | 2025 | Census |
| Median Age | 39.4 yrs | ±4.2 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 5,893 | ±197 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).