Decatur city, Indiana
Official LSAD Designation: Decatur city • Census GEOID: 1817074
• Adams County
Demographics & Population Profile
Population and demographics for Decatur city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 10,090 | — | 2025 | Census |
| Median Age | 44.6 yrs | ±2.9 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 4,389 | ±317 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).