Welcome to O'Fallon

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

  Green Initiative

  Muni Code/Charter

  Municipal Court

  O'Fallon History

  Sewer Lateral Ins.


  Utility Services

  Volunteer Opps.

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