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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