Duncan, OK Area Codes
Duncan is served by area code 580. It is in Oklahoma, Stephens County. About 27,618 people live in its 3 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 580 |
| State / province | Oklahoma |
| County | Stephens County |
| Population | 27,618 |
| ZIP codes | 3 |
| Time zone | Central |
| Coordinates | 34.5031, -97.8974 |
What area code is Duncan in?
| Area code | Main state | Population covered | Overlap |
|---|---|---|---|
| 580 | Oklahoma | 778,081 | — |
ZIP codes in the code footprint
Nearby towns and their area codes
Marlow 580Lawton 580Fort Sill 580Chickasha 405, 572Pauls Valley 405, 572Blanchard 405Purcell 405Ardmore 580
How to dial
Dial 580 + 7 digits for a number in Duncan, or +1 580 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.