| Name | Status | Population census 2000-04-01 | Population census 2010-04-01 | Population estimate 2011-07-01 | |
|---|---|---|---|---|---|
| St. Clair | County | 256,043 | 270,056 | 270,119 | 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 | |
|---|---|---|---|---|---|
| Alorton | Village | 2,749 | 2,002 | 2,005 | o |
| Belleville | City | 42,385 | 44,483 | 44,515 | o |
| Brooklyn | Village | 676 | 749 | 749 | o |
| Cahokia | Village | 16,391 | 15,241 | 15,251 | o |
| Caseyville | Village | 4,337 | 4,245 | 4,248 | o |
| Centreville | City | 5,951 | 5,309 | 5,313 | o |
| Dupo | Village | 3,930 | 4,138 | 4,141 | o |
| East Carondelet | Village | 315 | 499 | 499 | o |
| East St. Louis | City | 31,622 | 27,006 | 27,027 | o |
| Fairview Heights | City | 14,995 | 17,078 | 17,091 | o |
| Fayetteville | Village | 384 | 366 | 366 | o |
| Freeburg | Village | 4,084 | 4,354 | 4,355 | o |
| Lebanon | City | 3,557 | 4,418 | 4,421 | o |
| Lenzburg | Village | 577 | 521 | 520 | o |
| Marissa | Village | 2,141 | 1,979 | 1,980 | o |
| Mascoutah | City | 5,771 | 7,483 | 7,489 | o |
| Millstadt | Village | 2,946 | 4,011 | 4,014 | o |
| New Athens | Village | 1,981 | 2,054 | 2,056 | o |
| O'Fallon | City | 22,151 | 28,337 | 28,359 | o |
| Sauget | Village | 249 | 159 | 160 | o |
| Shiloh | Village | 8,622 | 12,682 | 12,693 | o |
| Smithton | Village | 2,365 | 3,693 | 3,698 | o |
| St. Libory | Village | 583 | 615 | 616 | o |
| Summerfield | Village | 467 | 451 | 451 | o |
| Swansea | Village | 10,928 | 13,430 | 13,440 | o |
| Washington Park | Village | 5,942 | 4,196 | 4,199 | o |
Source: US Census Bureau (web).
2012-07-02WWW.CITYPOPULATION.DE