Seneca city, Oregon
Official LSAD Designation: Seneca city • Census GEOID: 4166200
• Grant County
Demographics & Population Profile
Population and demographics for Seneca city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 160 | — | 2025 | Census |
| Median Age | 67.8 yrs | ±16.2 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 71 | ±37 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).