O'Fallon is a city in St. Clair County, Illinois, United States. The 2020 census listed the population at 32,289. The city is the second largest city in the Metro-East region and Southern Illinois. It sits 5 miles from Scott Air Force Base and 18 miles from Downtown St Louis.
Ofallon Station Listings Summary
Ofallon Station - Town
vs. County Stats
Avg Year Built in Ofallon Station: 1927
/ County Avg 1966