| City : | Columbia City |
| County : | Monroe County, St. Clair County |
| State : | Illinois (IL) |
| | |
| Land Area : | 10.41 sq mi |
| Water Area : | 0.07 sq mi |
| Latitude : | 38.4580574 |
| Longitude : | -90.2159952 |
| | |
| Population (2010): | 9,707 |
| Population Estimate (2012) : | 9,687 |
| Population Density : | 932.31/sq mi |
| Housing Units (2012) : | 3,977 |
| Median Household Income (2012) : | $62,234 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $88,808 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $198,400 (Illinois : $190,800, USA : $181,400) |