| City : | Cromwell City |
| County : | Union County |
| State : | Iowa (IA) |
| Land Area : | 0.29 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 41.0403126 |
| Longitude : | -94.4617367 |
| Population (2010): | 107 |
| Population Estimate (2012) : | 69 |
| Population Density : | 368.93/sq mi |
| Housing Units (2012) : | 48 |
| Median Household Income (2012) : | $55,000 (Iowa : $51,129, USA : $53,046) |
| Median Family Income (2012) : | $66,250 (Iowa : $64,772, USA : $64,585) |
| Median House Price (2012) : | $65,800 (Iowa : $123,000, USA : $181,400) |