| Name | Status | Population census 2000-04-01 | Population census 2010-04-01 | Population estimate 2011-07-01 | |
|---|---|---|---|---|---|
| Union | County | 18,311 | 17,808 | 17,712 | o |
| Illinois | Federal State | 12,419,927 | 12,830,632 | 12,859,752 |
| Name | Status | Population census 2000-04-01 | Population census 2010-04-01 | Population estimate 2011-07-01 | |
|---|---|---|---|---|---|
| Alto Pass | Village | 388 | 391 | 390 | o |
| Anna | City | 5,158 | 4,444 | 4,420 | o |
| Cobden | Village | 1,116 | 1,157 | 1,150 | o |
| Dongola | Village | 806 | 726 | 721 | o |
| Jonesboro | City | 1,841 | 1,821 | 1,810 | o |
| Mill Creek | Village | 76 | 65 | 65 | o |
Source: US Census Bureau (web).
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