| City : | St. Marys City |
| County : | Warren County |
| State : | Iowa (IA) |
| Land Area : | 0.14 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 41.3076512 |
| Longitude : | -93.7338720 |
| Population (2010): | 127 |
| Population Estimate (2012) : | 126 |
| Population Density : | 910.10/sq mi |
| Housing Units (2012) : | 46 |
| Median Household Income (2012) : | $46,932 (Iowa : $51,129, USA : $53,046) |
| Median Family Income (2012) : | $47,045 (Iowa : $64,772, USA : $64,585) |
| Median House Price (2012) : | $112,500 (Iowa : $123,000, USA : $181,400) |
St. Marys City Zip Codes
| 50240 (2,453) |