| City : | Grinnell City |
| County : | Ferry County, Poweshiek County |
| State : | Iowa (IA) |
| Land Area : | 5.60 sq mi |
| Water Area : | 0.04 sq mi |
| Latitude : | 41.7381542 |
| Longitude : | -92.7249154 |
| Population (2010): | 9,218 |
| Population Estimate (2012) : | 9,205 |
| Population Density : | 1,647.44/sq mi |
| Housing Units (2012) : | 3,844 |
| Median Household Income (2012) : | $45,197 (Iowa : $51,129, USA : $53,046) |
| Median Family Income (2012) : | $61,198 (Iowa : $64,772, USA : $64,585) |
| Median House Price (2012) : | $123,500 (Iowa : $123,000, USA : $181,400) |
Grinnell City Zip Codes
| 50112 (11,536) |