O'Fallon (/oʊˈfælən/ oh-FAL-ən) is a city in St. Charles County, Missouri, United States. It is part of the St. Louis metropolitan statistical area, located along Interstates 64 and 70 between Lake St. Louis and St. Peters. As of the 2020 census, O'Fallon had a population of 91,316, making it the largest suburb of St. Louis, as well as the largest municipality in St. Charles County and the seventh-largest in Missouri. O'Fallon's namesake in St. Clair County, Illinois, is also part of the St. Louis region. The two cities are one of the few pairs of same-named municipalities to be part of the same metro area.
Zip Codes in OFallon, MO that we also serve: 63367 63366 63368
Locksmith9000 delivers fast, reliable, and professional locksmith services nationwide.
With expert technicians available 24/7 and service coverage in all 50 states, we’re the go-to solution for residential, commercial, and automotive lock problems. Whether you’re in New York, Los Angeles, or a small town in between, our mobile locksmiths are just a call away — ready to restore your peace of mind.