| Zip Code : | 62221 |
| City : | Belleville city, Freeburg village, Mascoutah city, Rentchler, Scott AFB, Shiloh village, Swansea village |
| County : | St. Clair County |
| State : | Illinois (IL) |
| | |
| Land Area : | 34.32 sq mi |
| Water Area : | 0.30 sq mi |
| Latitude : | 38.5121111 |
| Longitude : | -89.9052893 |
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| Population (2010): | 27,858 |
| Population Estimate (2012) : | 27,571 |
| Population Density : | 811.81/sq mi |
| Housing Units (2012) : | 12,063 |
| Median Household Income (2012) : | $56,637 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $78,388 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $160,000 (Illinois : $190,800, USA : $181,400) |