Eureka, MO Area Codes
Eureka is served by area code 636. It is in Missouri, St. Louis County. About 19,508 people live in its 1 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 636 |
| State / province | Missouri |
| County | St. Louis County |
| Population | 19,508 |
| ZIP codes | 1 |
| Time zone | Central |
| Coordinates | 38.4909, -90.6157 |
What area code is Eureka 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
High Ridge 636Pacific 636Ballwin 636House Springs 636Fenton 636Chesterfield 636Imperial 636Arnold 636
How to dial
Dial 636 + 7 digits for a number in Eureka, or +1 636 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.