Please Remove Vehicles and Obstructions from Designated Emergency Snow Routes  »

O’Fallon, Illinois – Due to the National Weather Forecast of snow potentially impacting the City of O’Fallon, January...

City Hall closed on Thursday and Friday, November 24 & 25, 2022 for Thanksgiving »

 O’Fallon, Illinois - In observance of Thanksgiving, City Hall will be closed on...

2022/10/27 - Veteran's Day Ceremonies 2022 »

O’Fallon, Illinois Mayor Herb Roach and the O’Fallon City Council encourage the...

Welcome to the City of O'Fallon

We are a diverse, charming community of hardworking residents, including personnel from nearby Scott Air Force Base. Over 30,000 people call O'Fallon "home", and each one contributes a wonderful mix of small-town caring and community pride. O'Fallon's rich history of trade and industry, and its solid foundation for continued growth and prosperity make it one of the area's most popular communities in which to live and work. Today, O'Fallon is known as one of the fastest growing communities in the Metropolitan St. Louis area. Visit us and see what O'Fallon has to offer!