Zip Area Code

O'Fallon, Missouri

No ZIP code carries the name of O'Fallon, Missouri, in St. Charles County; the nearest ZIP codes are 63367 and 63368, in area code 636.

Nearest ZIP
63367, 63368
Area code
636
Time zone
Central Time
Coordinates
38.7847, -90.7207

Nearest ZIP codes to O'Fallon

These are the ZIP codes nearest to O'Fallon, each listed with the post office it is named after.

ZIP codePost officeCountyArea codes
63367Lake Saint LouisSt. Charles County636
63368O FallonSt. Charles County636

Area code for O'Fallon

  • Area code 636

    In service since May 22, 1999. Local calls are dialed with seven digits.

Time zone

O'Fallon is in the Central Time zone.

Towns near O'Fallon