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O'Fallon Township, St. Clair County, Illinois

Coordinates: 38°36′49″N 89°51′53″W / 38.61361°N 89.86472°W / 38.61361; -89.86472
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O'Fallon Township
Township
Location in St. Clair County
Location in St. Clair County
St. Clair County's location in Illinois
St. Clair County's location in Illinois
CountryUnited States
StateIllinois
CountySt. Clair
EstablishedNovember 6, 1883
Area
 • Total
35.78 sq mi (92.7 km2)
 • Land35.12 sq mi (91.0 km2)
 • Water0.66 sq mi (1.7 km2)  1.84%
Population
 (2010)
 • Total
26,467
 • Estimate 
(2018)[1]
29,484
 • Density741.9/sq mi (286.4/km2)
Time zoneUTC-6 (CST)
 • Summer (DST)UTC-5 (CDT)
FIPS code17-163-55262

O'Fallon Township is located in St. Clair County, Illinois. As of the 2010 census, its population was 26,053 and it contained 10,338 housing units.[2]

Geography

According to the 2010 census, the township has a total area of 35.78 square miles (92.7 km2), of which 35.12 square miles (91.0 km2) (or 98.16%) is land and 0.66 square miles (1.7 km2) (or 1.84%) is water.[2]

Demographics

Historical population
CensusPop.Note
2016 (est.)26,281[1]
U.S. Decennial Census[3]

References

  1. ^ a b "Population and Housing Unit Estimates". Retrieved June 9, 2017.
  2. ^ a b "Population, Housing Units, Area, and Density: 2010 - County -- County Subdivision and Place -- 2010 Census Summary File 1". United States Census. Archived from the original on 2020-02-12. Retrieved 2013-05-28.
  3. ^ "Census of Population and Housing". Census.gov. Retrieved June 4, 2016.

38°36′49″N 89°51′53″W / 38.61361°N 89.86472°W / 38.61361; -89.86472