O'Fallon, Missouri, US is a city located in St. Charles County, established in 1856 and incorporated in 1912. It was named after Civil War general John O'Fallon. The city has experienced significant growth since the 1980s, becoming the seventh-most populous city in the state. A notable attraction is the Fort Zumwalt Park, featuring the historic 1819 Fort Zumwalt, which served as a trading post and military fort.
Dollar General takes the top spot among Dollar Stores and Deep Discount Stores in Ofallon, Missouri with 2 locations as of April 12, 2024.