Welcome to O'Fallon
O'Fallon is one of the largest municipalities in St Charles County and in the state of Missouri. Located along Interstate 70 and Interstate 64 between Lake St Louis and St. Peters. The City of O'Fallon's unique attractions offer something for everyone. There's plenty of restaurants and shopping opportunities. You can swim or exercise at the Renaud Spirit Center recreation complex, go picnicking in a city park, or relax in style at a River City Rascals ballgame - a thriving minor league baseball park. If you're a heritage tourist, O'Fallon's memorials and historic sites include two 9-11 monuments created from New York's World Trade Center debris, a rare War of 1812 fort site and one of the first monuments in the country to honor those who gave their lives in the Vietnam War. O'Fallon is also famous for many family friendly festivals and events throughout the year. One of the largest employers in O'Fallon is the MasterCard Headquarters.