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

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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.
4
O'Fallon was founded in 1856.
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O'Fallon has a population of approximately 92,000.
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