Ballwin, MO Area Codes
Ballwin is served by area code 636. It is in Missouri, St. Louis County. About 91,586 people live in its 4 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 636 |
| State / province | Missouri |
| County | St. Louis County |
| Population | 91,586 |
| ZIP codes | 4 |
| Time zone | Central |
| Coordinates | 38.5913, -90.5489 |
What area code is Ballwin 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
Chesterfield 636Fenton 636Eureka 636High Ridge 636Pacific 636Saint Charles 636Saint Ann 314, 557Arnold 636
How to dial
Dial 636 + 7 digits for a number in Ballwin, or +1 636 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.