O'Fallon was founded in 1856 by Nicholas Krekel. The community was named after John O'Fallon, the president of the North Missouri Railroad. A post office called O'Fallon has been in operation since 1859. The St. Mary's Institute of O'Fallon was listed on the National Register of Historic Places in 2007.
In 2006, Money Magazine named O'Fallon 39th in its "Best 100 Places to Live." Money Magazine also ranked O'Fallon 68th out of 100 in 2008, 26th out of 100 in 2010, and 42nd out of 100 in 2017.
Mastercard has a major presence in O'Fallon. Venture Stores was headquartered and maintained a distribution center in O'Fallon, until its dissolution. The buildings are now occupied by True Manufacturing. Shell Oil Company announced on February 27, 2012 it will close its regional distribution center here by the end of 2012, costing more than a dozen jobs. Lou Fusz Automotive Dealership in O'Fallon, won the 2012 State of Missouri Bid Contract for Police vehicles for the second year in a row.
O'Fallon is the home of the River City Rascals independent Frontier League baseball team. The Rascals play at CarShield Field in O'Fallon, which was built in 1999. It is located on Tom Ginnever Boulevard and T.R. Hughes Boulevard near downtown.
Parks and recreation
- Civic Park - A 20 acres (81,000 m2) park featuring Alligator's Creek Aquatic Center, Bandstand and Amphitheater.
- Dames Park - A 59 acres (240,000 m2) sports park with three football fields and a fitness course.
- Fort Zumwalt Park - A 47.5 acres (192,000 m2) park featuring a fishing lake, a disc golf course, playgrounds and historic Fort Zumwalt.
- Knaust Park - A 6 acres (24,000 m2) park with a playground and walking path.
- O'Fallon Sports Park - A 95 acres (380,000 m2) soccer complex with 12 fields playgrounds and concessions. Also home to the Renaud Spirit Center.
- Ozzie Smith Sports Complex - A 76 acres (310,000 m2) baseball/softball complex with seven diamonds and the St. Charles Co. Amateur Sports Hall of Fame. Adjacent to CarShield Field.
- Westhoff Park - A 65 acres (260,000 m2) park featuring baseball diamonds, sand volleyball courts, horseshoe pits, basketball courts, tennis and handball courts, and a skate park.
Tradition with Vision
Location in the state of Missouri
|Coordinates: 38°47′04″N 90°42′29″WCoordinates: 38°47′04″N 90°42′29″W|
|Metro||Greater St. Louis|
|Incorporated||September 25, 1912|
|• Type||Mayor-council government|
|• Mayor||Bill Hennessy|
|• City Council|
|• City||29.20 sq mi (75.63 km2)|
|• Land||29.19 sq mi (75.60 km2)|
|• Water||0.01 sq mi (0.03 km2)|
|Elevation||541 ft (165 m)|
| • Estimate
|• Density||2,700/sq mi (1,000/km2)|
| • Metro
||2,810,056 (US: 19th)|
|Time zone||UTC−6 (CST)|
|• Summer (DST)||UTC−5 (CDT)|
|GNIS feature ID||0756460|