| City : | Marion City |
| County : | King County, Linn County |
| State : | Iowa (IA) |
| Land Area : | 16.05 sq mi |
| Water Area : | 0.01 sq mi |
| Latitude : | 42.0445960 |
| Longitude : | -91.5861600 |
| Population (2010): | 34,768 |
| Population Estimate (2012) : | 34,750 |
| Population Density : | 2,166.19/sq mi |
| Housing Units (2012) : | 15,064 |
| Median Household Income (2012) : | $59,120 (Iowa : $51,129, USA : $53,046) |
| Median Family Income (2012) : | $77,721 (Iowa : $64,772, USA : $64,585) |
| Median House Price (2012) : | $144,000 (Iowa : $123,000, USA : $181,400) |