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 76,000 residents. While rich in history, the City today offers the latest in housing, business, retail and leisure.

Overview of O'Fallon
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Check out news, events and more on O'Fallon Update.
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What business district in O’Fallon do you frequent most?(polling)

Filing closed for April 6, 2010 municipal election

Tuesday, January 19, was the final day of filing for the April 6, municipal election for the O’Fallon City Council.

Candidates filed in all five City wards, with one candidate each filing in wards 1, 3 and 4, and three candidates in Ward 2, and four candidates in Ward 5, the City’s newest ward. See the candidates (PDF).

The 2010 Census is coming!

The 2010 Census will begin in earnest in March when you’ll receive your Census card in the mail. Please complete and mail it back right away! Our City’s Federal funding and your own political representation are based on the number of our residents counted this year.

According to the 2000 Census, O’Fallon’s population was approximately 46,000 people. Today, we know our population is over 78,000 residents. Please, Stand up and be counted for O’Fallon!

For more information on the 2010 Census, pleaase click here.