Seneca city, Kansas
Official LSAD Designation: Seneca city • Census GEOID: 2063950
• Nemaha County
Demographics & Population Profile
Population and demographics for Seneca city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 2,139 | — | 2025 | Census |
| Median Age | 51.8 yrs | ±10.1 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 869 | ±99 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).