O'Fallon is a city located in St. Clair County, Illinois, US. It was incorporated in 1874 and has since grown to become the third largest city in the Metro East region of Illinois. The city is known for its family-friendly atmosphere and quality schools. A notable attraction in O'Fallon is the Katy Trail, the longest continuous rail-trail in the country, which attracts cyclists, hikers, and nature enthusiasts from all over.
Dollar General takes the top spot among Dollar Stores and Deep Discount Stores in Ofallon, Illinois with 1 locations as of April 12, 2024.