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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

Aug 5, 2026
Attorney Shares Photo Of ‘Unacceptable’ Police Car Decal, Sparks Online Debate
In Portland, Oregon, criminal defense attorney Lindsey Burrows took to Twitter to complain about a Thin Blue Line flag sticker tha…
Aug 3, 2026
American Airlines Pilot Sparks Outrage For Having ‘Offensive Sticker’ On His Luggage 
Dana Finley Morrison, a Missouri fraternity and sorority worker, was on an American Airlines flight from St. Lucia to Miami on Sat…
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 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…

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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LS
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SJ
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Pop. 73,000
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