| County : | Clinton County |
| State : | Illinois (IL) |
| Land Area : | 474.08 sq mi |
| Water Area : | 29.19 sq mi |
| Latitude : | 38.6064228 |
| Longitude : | -89.4231363 |
| Population (2010): | 37,762 |
| Population Estimate (2012) : | 37,793 |
| Population Density : | 79.65/sq mi |
| Housing Units (2012) : | 15,311 |
| Median Household Income (2012) : | $60,661 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $75,224 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $128,700 (Illinois : $190,800, USA : $181,400) |
Clinton County Cities / Towns
| Albers Village (1,190) | Aviston Village (1,945) | Bartelso Village (595) |
| Beckemeyer Village (1,040) | Breese City (4,442) | Carlyle City (3,281) |
| Centralia City (13,032) | Damiansville Village (491) | Germantown Village (1,269) |
| Hoffman Village (508) | Huey Village (169) | Keyesport Village (421) |
| New Baden Village (3,349) | Trenton City (2,715) | Wamac City (1,185) |
Clinton County Zip Codes
| 62215 (1,872) | 62216 (2,526) | 62218 (1,481) |
| 62219 (1,009) | 62230 (6,194) | 62231 (7,589) |
| 62245 (1,794) | 62249 (15,971) | 62250 (504) |
| 62253 (696) | 62265 (4,353) | 62266 (254) |
| 62275 (3,621) | 62293 (4,748) | 62801 (22,415) |
| 62875 (1,167) | 62882 (2,331) |