- O'Fallon Township, St. Clair County, Illinois
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O'Fallon Township — Township — Location in St. Clair County St. Clair County's location in Illinois Country United States State Illinois County St. Clair Established November 6, 1883 Government – Supervisor Area – Total 35.7 sq mi (57.45 km2) – Land 35.4 sq mi (56.97 km2) – Water 0.3 sq mi (0.48 km2) 1% Population (2000) – Total 21,859 Time zone CST (UTC-6) – Summer (DST) CDT (UTC-5) O'Fallon Township is located in St. Clair County, Illinois. The population was 21,859 at the 2000 census.
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Municipalities and communities of St. Clair County, Illinois Cities Belleville | Centreville | Collinsville‡ | Columbia‡ | East St. Louis | Fairview Heights | Lebanon | Madison‡ | Mascoutah | O'Fallon
Villages Alorton | Brooklyn | Cahokia | Caseyville | Dupo | East Carondelet | Fairmont City‡ | Fayetteville | Freeburg | Hecker‡ | Lenzburg | Marissa | Millstadt | New Athens | New Baden‡ | Sauget | Shiloh | Smithton | St. Libory | Summerfield | Swansea | Washington Park
Townships Canteen | Caseyville | Centreville | Engelmann | Fayetteville | Freeburg | Lebanon | Lenzburg | Marissa | Mascoutah | Millstadt | New Athens | O’Fallon | Prairie du Long | Shiloh Valley | Smithton | St. Clair | Stites | Stookey | Sugarloaf
CDPs Unincorporated
communitiesDouglas | Imbs | Westview
Footnotes ‡This populated place also has portions in an adjacent county or counties
Categories:- Townships in St. Clair County, Illinois
- Metro-East geography stubs
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