| City : | Affton |
| County : | Minidoka County, St. Louis County |
| State : | Missouri (MO) |
| | |
| Land Area : | 4.60 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 38.5498211 |
| Longitude : | -90.3261806 |
| | |
| Population (2010): | 20,307 |
| Population Estimate (2012) : | 19,945 |
| Population Density : | 4,410.27/sq mi |
| Housing Units (2012) : | 9,347 |
| Median Household Income (2012) : | $56,954 (Missouri : $47,333, USA : $53,046) |
| Median Family Income (2012) : | $71,177 (Missouri : $59,395, USA : $64,585) |
| Median House Price (2012) : | $149,500 (Missouri : $138,400, USA : $181,400) |