Decatur County IN United States
| County FIPS | 18031 |
| Largest City | Greensburg |
| State | Indiana |
| Latitude | 39.3070 |
| Longitude | -85.5011 |
| Population | 26,422 |
| Density | 70.93 people per square mile |
| Time Zone | America/Indiana/Indianapolis |
Median household: $69,783
Median individual: $40,282
Mode: 93.3% White
Median house value: $197,402.0
Median: 39.8 years old
With at least college degree: 20.0%
With STEM degree: 46.3%
Never married: 26.0%
Unemployed: 2.7%
All data comes from the SimpleMaps US Counties Database, 2026.
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