| Zip Code : | 52249 |
| City : | Keystone city |
| County : | Benton County |
| State : | Iowa (IA) |
| Land Area : | 50.64 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 42.0141521 |
| Longitude : | -92.2054265 |
| Population (2010): | 965 |
| Population Estimate (2012) : | 993 |
| Population Density : | 19.06/sq mi |
| Housing Units (2012) : | 428 |
| Median Household Income (2012) : | $58,333 (Iowa : $51,129, USA : $53,046) |
| Median Family Income (2012) : | $69,261 (Iowa : $64,772, USA : $64,585) |
| Median House Price (2012) : | $92,900 (Iowa : $123,000, USA : $181,400) |