Chesterfield, MO Area Codes
Chesterfield is served by area code 636. It is in Missouri, St. Louis County. About 63,022 people live in its 3 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 636 |
| State / province | Missouri |
| County | St. Louis County |
| Population | 63,022 |
| ZIP codes | 3 |
| Time zone | Central |
| Coordinates | 38.6545, -90.5901 |
What area code is Chesterfield 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
Ballwin 636Saint Charles 636Fenton 636Saint Peters 636Eureka 636Saint Ann 314, 557High Ridge 636O Fallon 636
How to dial
Dial 636 + 7 digits for a number in Chesterfield, or +1 636 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.