O'Fallon is located in United States. It is positioned in "America/Chicago" time zone (GMT-6 ) with current time of 09:53 AM, Saturday (difference from your time zone: hours). O'Fallon is populated place in Missouri in Saint Charles County with population of ∼79.3 thousand.
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If you like O'Fallon:
Places around O'Fallon sort by population
Saint Peters
6.5 km
Chesterfield
19.6 km 
Wentzville
13.3 km 
Lake Saint Louis
7.6 km 
Dardenne Prairie
5.2 km 
Weldon Spring
10.8 km 
Cottleville
8.2 km
Saint Paul
6.7 km 
Winfield
21 km 
Sources, notes:
• Map is powered by openstreetmap.org.
• Geographic location info from www.geonames.org database.
• Population data is only approximately value, it may be out of date.
• Distance calculator between two coordinates is powered by PHP with rounding precision of 0.1 km (or 1 km for longer distances), source code can be found at 1km.net site.
