O'Fallon Township, St. Clair County, Illinois

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]

O'Fallon Township
Township
Location in St. Clair County
St. Clair County's location in Illinois
CountryUnited States
StateIllinois
CountySt. Clair
EstablishedNovember 6, 1883
Area
  Total35.78 sq mi (92.7 km2)
  Land35.12 sq mi (91.0 km2)
  Water0.66 sq mi (1.7 km2)  1.84%
Population
 (2010)
  Total26,467
  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

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

References

  1. "Population and Housing Unit Estimates". Retrieved June 9, 2017.
  2. "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.


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