O'Fallon, MO Zip Code
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ZIP code: 63366, 63368
Area code(s): 636
Elevation: 541m (1775ft)
County: St. Charles
Postcode areas of O'Fallon are 63366, 63368.
Area code(s) of O'Fallon is 636.
O'Fallon has 541m (1775ft) altitude.
The coordinates of O'Fallon are: 38.78444 lat, -90.70806 lng.
O'Fallon belongs to St. Charles County.