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O'Fallon, Missouri

Located in St. Charles County, Missouri, O'Fallon was established in 1856. One of Missouri's fastest-growing cities. St. Charles County is the fastest-growing county in the St. Louis metro.
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Founded 1856 | Population 92,000 | Peak 92,000 (2024) | County St. Charles County

Top 10 Most Important Events for O'Fallon, Missouri

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1856 Railroad Town: Named for Colonel Nicholas O'Fallon.
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1960 Parks & Recreation: O'Fallon developed parks and recreational facilities that became central to community life.
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1990 St. Louis Suburban Boom: Rapid growth in St. Charles County.
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2010 Best Place Rankings: Named among best places to live.
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Latest News in O Fallon

Mar 7, 2016
Missouri High School Students Walk Out Protest Transgender Girl
JEFFERSON CITY, Mo. (March 7, 2016) — Tensions boiled over at a Missouri high school on Monday when dozens of students staged a …
Mar 3, 2016
Missouri Lawmakers Consider Bills Both Sides Gun Debate
JEFFERSON CITY, Mo. (March 3, 2016) – In the midst of a heated national conversation on firearms, Missouri’s lawmakers too…
Jan 15, 2016
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Washington, D.C. – On January 15, 2016, a crowd of several thousand people filled the National Mall to mark what would have been…
Jan 11, 2016
Missouri Mailman Saves Elderly Womans Life
St. Louis, Missouri (January 11, 2016) – In a quiet neighborhood on the outskirts of town, a routine mail delivery turned into a…
Dec 2, 2015
Missouri Lawmakers Consider Both Bills Both Sides Gun Debate
JEFFERSON CITY, Mo. — On December 2, 2015, Missouri lawmakers dove into a heated discussion over a pair of bills that captured t…
Sep 4, 2015
Missouri Lawmakers Consider New Gun Bills
JEFFERSON CITY, Mo. — On September 4, 2015, Missouri lawmakers dove into heated discussions over a slate of new gun bills that c…

Complete Historical Timeline

1856 Transport
Railroad Town
1960 Culture
Parks & Recreation
1990 Business
St. Louis Suburban Boom
2010 Government
Best Place Rankings

Did You Know?

1
One of Missouri's fastest-growing cities.
2
St. Charles County is the fastest-growing county in the St. Louis metro.
3
Named for Colonel Nicholas O'Fallon, a railroad executive.
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O'Fallon was founded in 1856.
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O'Fallon has a population of approximately 92,000.

Famous People from O Fallon, Missouri

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Josh Sargent
Association Football Player · Born Feb 20, 2000 · Age 26
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Napheesa Collier
Basketball Player · Born Sep 23, 1996 · Age 29
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Megan Meier
Student · Born Nov 6, 1992 · Died Oct 17, 2006 (age 13)

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