| County : | Decatur County |
| State : | Iowa (IA) |
| Land Area : | 531.88 sq mi |
| Water Area : | 1.60 sq mi |
| Latitude : | 40.7363787 |
| Longitude : | -93.7845799 |
| Population (2010): | 8,457 |
| Population Estimate (2012) : | 8,382 |
| Population Density : | 15.90/sq mi |
| Housing Units (2012) : | 3,834 |
| Median Household Income (2012) : | $34,942 (Iowa : $51,129, USA : $53,046) |
| Median Family Income (2012) : | $49,609 (Iowa : $64,772, USA : $64,585) |
| Median House Price (2012) : | $70,000 (Iowa : $123,000, USA : $181,400) |
Decatur County Cities / Towns
| Davis City (204) | Decatur City (197) | Garden Grove City (211) |
| Grand River City (236) | Lamoni City (2,324) | Leon City (1,977) |
| Le Roy City (15) | Pleasanton City (49) | Van Wert City (230) |
| Weldon City (125) |
Decatur County Zip Codes
| 50065 (583) | 50067 (302) | 50103 (452) |
| 50108 (471) | 50123 (818) | 50133 (567) |
| 50140 (2,969) | 50144 (2,901) | 50147 (440) |
| 50262 (453) | 50264 (466) |