Saint Charles, MO Area Codes
Saint Charles is served by area code 636. It is in Missouri, St. Charles County. About 141,951 people live in its 4 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 636 |
| State / province | Missouri |
| County | St. Charles County |
| Population | 141,951 |
| ZIP codes | 4 |
| Time zone | Central |
| Coordinates | 38.7720, -90.5436 |
What area code is Saint Charles in?
| Area code | Main state | Population covered | Overlap |
|---|---|---|---|
| 636 | Missouri | 1,007,929 | — |
ZIP codes in the code footprint
Nearby towns and their area codes
Saint Peters 636Chesterfield 636Saint Ann 314, 557O Fallon 636Ballwin 636Lake Saint Louis 636Fenton 636Saint Louis 314, 557
How to dial
Dial 636 + 7 digits for a number in Saint Charles, or +1 636 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.