| Zip Code : | 63084 |
| City : | St. Clair city, Union city |
| County : | Franklin County |
| State : | Missouri (MO) |
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| Land Area : | 75.10 sq mi |
| Water Area : | 0.07 sq mi |
| Latitude : | 38.4219000 |
| Longitude : | -91.0192888 |
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| Population (2010): | 17,414 |
| Population Estimate (2012) : | 17,919 |
| Population Density : | 231.88/sq mi |
| Housing Units (2012) : | 7,047 |
| Median Household Income (2012) : | $48,665 (Missouri : $47,333, USA : $53,046) |
| Median Family Income (2012) : | $61,640 (Missouri : $59,395, USA : $64,585) |
| Median House Price (2012) : | $144,700 (Missouri : $138,400, USA : $181,400) |