City of O'Fallon, Missouri

Located only minutes west of St. Louis County, the City of O'Fallon encompasses nearly 30 square miles with ideal access to I-70 in the north and I-64 in the south.
Established in 1856, O'Fallon is the seventh largest city in Missouri and largest in St. Charles County, with a growing population of approximately 79,300 residents. While rich in history, the City today offers the latest in housing, business, retail and leisure.

Check out upcoming O'Fallon activities and events each week on O'Fallon Update.

Career Opps.

City Projects

bullet Forms

bullet Grant Programs

Subscribe to video podcasts of City meetings and O'FallonTV programming!

Go to O'FallonTV Podcasts

Mayor delivers State of the City address

Watch O'Fallon Mayor Bill Hennessy's State of the City speech from Friday, January 13, on O'FallonTV's YouTube channel.

Get started planning the journey of a lifetime through the Canadian Rockies at a free informational session

The session includes a detailed day-by-day itinerary of the nine-day trip, which will begin on Thursday, September 27, when the motor coach will take travelers from the Civic Park parking lot to the St. Louis airport for a flight to Vancouver, British Columbia. Travelers will return to O'Fallon on Friday, October 5. Read more details (PDF).

Is there no room left in your budget for home repairs?

If so, let the City of O'Fallon help! The Home Improvement Loan Program can help repair or replace furnace/AC units and replace windows, to name a few of the eligible projects. Click here for more information and for an application.