| Zip Code : | 62033 |
| City : | Dorchester village, East Gillespie village, Gillespie city, Mount Clare village, Wilsonville village |
| County : | Macoupin County |
| State : | Illinois (IL) |
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| Land Area : | 49.36 sq mi |
| Water Area : | 0.61 sq mi |
| Latitude : | 39.1365669 |
| Longitude : | -89.8398845 |
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| Population (2010): | 4,894 |
| Population Estimate (2012) : | 4,905 |
| Population Density : | 99.16/sq mi |
| Housing Units (2012) : | 2,271 |
| Median Household Income (2012) : | $43,750 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $53,819 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $79,900 (Illinois : $190,800, USA : $181,400) |