| Zip Code : | 51446 |
| City : | Irwin city |
| County : | Shelby County |
| State : | Iowa (IA) |
| Land Area : | 34.86 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 41.7750941 |
| Longitude : | -95.1918272 |
| Population (2010): | 511 |
| Population Estimate (2012) : | 505 |
| Population Density : | 14.66/sq mi |
| Housing Units (2012) : | 267 |
| Median Household Income (2012) : | $46,667 (Iowa : $51,129, USA : $53,046) |
| Median Family Income (2012) : | $60,536 (Iowa : $64,772, USA : $64,585) |
| Median House Price (2012) : | $64,700 (Iowa : $123,000, USA : $181,400) |