City of O'Fallon, Illinois Information

In the St. Louis Metropolitan East area, O’Fallon (population 30,400) is one of the fastest growing communities and has earned the reputation as a great place to call home. Located just 15-20 minutes from downtown St. Louis, O’Fallon is the premier community in St. Clair County offering quality housing and a wide range of businesses and services. Interstate 64 runs through O’Fallon and currently offers four interchanges providing great accessibility for customers and commuters alike. Due to its close proximity to Scott Air Force Base, O’Fallon is home to many veterans, defense contractors, and active duty military personnel.