| City : | Collinsville City |
| County : | Madison County, St. Clair County |
| State : | Illinois (IL) |
| | |
| Land Area : | 14.68 sq mi |
| Water Area : | 0.19 sq mi |
| Latitude : | 38.6768247 |
| Longitude : | -90.0057487 |
| | |
| Population (2010): | 25,579 |
| Population Estimate (2012) : | 25,370 |
| Population Density : | 1,742.44/sq mi |
| Housing Units (2012) : | 11,891 |
| Median Household Income (2012) : | $47,229 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $57,901 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $119,800 (Illinois : $190,800, USA : $181,400) |