USA
> Decatur, IN Micro Area
| Metropolitan statistical area : | Decatur, IN Micro Area |
| Land Area : | 339.03 sq mi |
| Water Area : | 0.94 sq mi |
| Latitude : | 40.7457327 |
| Longitude : | -84.9361305 |
| Population (2010): | 34,387 |
| Population Estimate (2012) : | 34,343 |
| Population Density : | 101.43/sq mi |
| Housing Units (2012) : | 13,014 |
| Median Household Income (2012) : | $45,339 (USA : $53,046) |
| Median Family Income (2012) : | $56,077 (USA : $64,585) |
| Median House Price (2012) : | $113,500 (USA : $181,400) |