| City : | St. Clair City |
| County : | Franklin County, Summit County |
| State : | Missouri (MO) |
| | |
| Land Area : | 3.70 sq mi |
| Water Area : | 0.01 sq mi |
| Latitude : | 38.3489415 |
| Longitude : | -90.9874007 |
| | |
| Population (2010): | 4,724 |
| Population Estimate (2012) : | 4,720 |
| Population Density : | 1,276.86/sq mi |
| Housing Units (2012) : | 2,142 |
| Median Household Income (2012) : | $30,146 (Missouri : $47,333, USA : $53,046) |
| Median Family Income (2012) : | $39,485 (Missouri : $59,395, USA : $64,585) |
| Median House Price (2012) : | $103,300 (Missouri : $138,400, USA : $181,400) |