O'Fallon Township, St. Clair County, Illinois

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
Area
• Total	35.78 sq mi (92.7 km^2)
• Land	35.12 sq mi (91.0 km^2)
• Water	0.66 sq mi (1.7 km^2)  1.84%
Population  (2010)
• Total	26,467
• Estimate  (2018)[1]	29,484
• Density	741.9/sq mi (286.4/km^2)
Time zone	UTC-6 (CST)
• Summer (DST)	UTC-5 (CDT)
FIPS code	17-163-55262

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

Census	Pop.	Note	%±
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 February 12, 2020. Retrieved May 28, 2013.
3. "Census of Population and Housing". Census.gov. Retrieved June 4, 2016.

External links

• City-data.com
• St. Clair County Official Site
• Illinois State Archives

38°36′49″N 89°51′53″W