| County : | Union County |
| State : | Illinois (IL) |
| Land Area : | 413.46 sq mi |
| Water Area : | 8.69 sq mi |
| Latitude : | 37.4751042 |
| Longitude : | -89.2528747 |
| Population (2010): | 17,808 |
| Population Estimate (2012) : | 17,799 |
| Population Density : | 43.07/sq mi |
| Housing Units (2012) : | 7,924 |
| Median Household Income (2012) : | $41,869 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $52,628 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $89,700 (Illinois : $190,800, USA : $181,400) |
Union County Cities / Towns
| Alto Pass Village (391) | Anna City (4,442) | Cobden Village (1,157) |
| Dongola Village (726) | Jonesboro City (1,821) | Mill Creek Village (65) |
Union County Zip Codes
| 62902 (4,531) | 62905 (677) | 62906 (7,276) |
| 62912 (1,179) | 62920 (3,265) | 62923 (518) |
| 62926 (2,263) | 62939 (3,119) | 62952 (3,372) |
| 62957 (996) | 62958 (2,262) | 62961 (65) |
| 62998 (419) |