O'Fallon, Illinois
O'Fallon: Township in St. Clair County, Illinois
About
O'Fallon is a township located in the county of Saint Clair in the U.S. state of Illinois. Its population at the 2010 census was 28,281 and a population density of 790 people per km². After 10 years in 2020 city had an estimated population of 29,606 inhabitants.
Quick Facts about O'Fallon
| Population : | 29,606 (2020) |
| Country : | United States of America |
| State : | Illinois (United States) |
| County : | Saint Clair County |
| Area : | 35.78 km2 |
| Time Zone : | America/Chicago |
| Local time : | 20:54:30 (21st December 2024) |
| Density : | 827 Pop. per km² as of 2020 |
| Population growth : | 4.48% (2010-2020) |
Geography
O'Fallon is located at 38°35'32"N 89°54'40"W (38.5922700, -89.9112100).
O'Fallon map
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Demographics
The population of O'Fallon increased by 4.48% in 10 years.
| Year | Population | % Change | Method |
| 2010 | 28,281 | - | census |
| 2011 | 29,423 | 3.88% | estimation process |
| 2012 | 29,328 | -0.32% | estimation process |
| 2013 | 29,224 | -0.36% | estimation process |
| 2014 | 29,151 | -0.25% | estimation process |
| 2015 | 29,124 | -0.09% | estimation process |
| 2016 | 29,199 | 0.26% | estimation process |
| 2017 | 29,364 | 0.56% | estimation process |
| 2018 | 29,602 | 0.8% | estimation process |
| 2019 | 29,621 | 0.06% | estimation process |
| 2020 | 29,606 | -0.05% | estimation process |
Schools in O'Fallon
College & universities near O'Fallon, IL
| Code | Name | City | ZIP |
|---|---|---|---|
| 147013 | McKendree University | Lebanon (IL) | 62254-1291 |
Stations (9)
Amtrak & bus stations near O'Fallon, IL
| Code | Name | Address | Type |
|---|---|---|---|
| STL | Gateway Transportation Center | 551 South 16th St. | RAIL |
| ALN | Alton | 3400 College Ave. | RAIL |
| KWD | Kirkwood | 110 West Argonne Dr. | RAIL |
| CEN | Centralia station | 108 East Broadway | RAIL |
| CRV | Carlinville | 128 Alton Rd. | RAIL |
Post offices near O'Fallon
| Post Office Name | City | ZIP |
|---|---|---|
| O Fallon Post Office | O Fallon (IL) | 62269 |
Other places with the same name (2)
- O'Fallon , Missouri The most populous city in St. Charles County, Missouri. It is located in the eastern part of the county. O'Fallon is known for its many parks and green spaces, its many historical sites, and its many attractions, such as the O'Fallon City Hall and the O'Fallon History Museum. with a population of 89,769 people.
Other cities in Saint Clair County
Cities, towns, neighborhoods & other populated places in Saint Clair County , IL. (more)
| City Name | Population | Title |
|---|---|---|
| Belleville | 40,536 | The county seat of St. |
| East Saint Louis | 25,776 | City in St. |
| Crest Hill | 20,209 | City in Will County, Illinois |
| Fairview Heights | 16,127 | City in Saint Clair County, Illinois, United States |
| Cahokia | 13,742 | Village in St. |
| Shiloh | 13,653 | Town in St. |
| Swansea | 13,276 | Village in St. |
| Pontiac | 11,176 | City in Illinois, USA |
| Summit | 10,977 | Village in Illinois, USA |
| Mascoutah | 8,076 | City in Saint Clair County, Illinois, United States |
| Centreville | 4,844 | City in Illinois, United States |
| Lebanon | 4,225 | City in St. |
| Freeburg | 4,223 | City in Illinois, United States of America |
| Rosemont | 4,147 | Village in the U. |
| Caseyville | 4,115 | City in Illinois, United States of America |
| Dupo | 3,845 | City in Illinois, United States of America |
Distance to Other Cities
O'Fallon distances to largest Illinois cities
