| Zip Code : | 62220 |
| City : | Belleville city, Smithton village |
| County : | St. Clair County |
| State : | Illinois (IL) |
| | |
| Land Area : | 29.27 sq mi |
| Water Area : | 0.43 sq mi |
| Latitude : | 38.4782770 |
| Longitude : | -89.9980322 |
| | |
| Population (2010): | 20,504 |
| Population Estimate (2012) : | 20,695 |
| Population Density : | 700.58/sq mi |
| Housing Units (2012) : | 9,341 |
| Median Household Income (2012) : | $51,314 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $60,922 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $113,300 (Illinois : $190,800, USA : $181,400) |