Central time zone
Current Time in O Fallon: 08:37 AM

O Fallon Area Codes

Here is the current list of area codes in O Fallon, MO. There is currently 1 area code(s) in O Fallon. Search all the most up-to-date currently used O Fallon area codes below.

Central time zone
Current Time in O Fallon: 08:37 AM
Area Code State City Timezone
636MissouriO FallonCentral