Ottawa city, Kansas
Official LSAD Designation: Ottawa city • Census GEOID: 2053550
• Franklin County
Demographics & Population Profile
Population and demographics for Ottawa city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 12,716 | — | 2025 | Census |
| Median Age | 36.9 yrs | ±2 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 5,233 | ±228 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).