Latest Data (2015)
Population 85,040
Nationwide Rank 386

Quick Facts

O'Fallon, Missouri is the 386th largest city in the United States as of 2015.

O'Fallon, Missouri is a city.

O'Fallon, Missouri is as large as it has ever been. In 2015 O'Fallon had its largest population ever.

O'Fallon, Missouri is growing extremely quickly. It is growing faster than 90% of similarly sized cities since 2000.

O'Fallon, Missouri Border Map

Similarly Sized Cities

Rank Name Growth
2000-2015
380 Champaign, Illinois 22.1%
381 Chino, California 22.2%
382 Alhambra, California 0.4%
383 Ogden, Utah 10.1%
384 Redwood City, California 13.0%
385 Bellingham, Washington 25.5%
386 O'Fallon, Missouri 67.0%
387 Hoover, Alabama 33.8%
388 Danbury, Connecticut 12.7%
389 Edinburg, Texas 72.6%
390 Trenton, New Jersey -1.3%
391 Santa Fe, New Mexico 32.8%
392 Bloomington, Indiana 18.2%

Demographics

Population History

Year Population Rank in US
2015 85,040 386
2014 84,009 387
2013 82,809 388
2012 81,979 387
2011 81,016 387
2010 79,329 392
2009 78,850 385
2008 77,258 394
2007 75,404 402
2006 72,468 418
2005 69,694 432
2004 67,147 444
2003 63,955 462
2002 60,205 498
2001 56,763 533
2000 50,901 613
1990 18,296 1,494