Monmouth, OR Area Codes
Monmouth, Oregon (population 11,543) uses area codes 503 and 971.
Monmouth has no telephone exchange of its own in NANPA records; it is served by the Dallas exchange about 10.3 km away.
Carriers with Monmouth numbers
13 prefixes are assigned to the Dallas exchange: 23% mobile, 31% VoIP and cable, 46% landline.
| Carrier | Prefixes |
|---|---|
| Lumen (Qwest) | 5 |
| T-Mobile | 3 |
| Onvoy (Sinch) | 2 |
| Peerless Network | 1 |
| Fractel | 1 |
| Bandwidth | 1 |
Area codes used in Monmouth
| Area code | Prefixes serving Monmouth | Main carriers in this code |
|---|---|---|
| 503 | 8 | Lumen (Qwest), Ziply Fiber, AT&T Mobility |
| 971 | 5 | AT&T Mobility, Onvoy (Sinch), T-Mobile |
Monmouth phone number prefixes
Numbers starting with these first six digits were originally assigned to the Dallas exchange.
503-420T-Mobile503-606Lumen (Qwest)503-623Lumen (Qwest)503-751Lumen (Qwest)503-831Lumen (Qwest)503-837Onvoy (Sinch)503-838Lumen (Qwest)503-917T-Mobile971-289Peerless Network971-465Fractel971-468T-Mobile971-539Onvoy (Sinch)971-612Bandwidth
Nearby cities in area code 503
Questions
- What is the area code for Monmouth, OR?
- Monmouth uses 2 area codes: 503 and 971. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.
- What time zone is Monmouth in?
- Monmouth is in the Pacific time zone.