Hillsboro, OR Area Codes
Hillsboro, Oregon (population 111,126) uses area codes 503 and 971.
Hillsboro has no telephone exchange of its own in NANPA records; it is served by the North Plains exchange about 9.1 km away.
Carriers with Hillsboro numbers
9 prefixes are assigned to the North Plains exchange: 11% mobile, 78% VoIP and cable, 11% landline.
| Carrier | Prefixes |
|---|---|
| Verizon Business (MCImetro) | 2 |
| Lumen (Level 3) | 2 |
| Telnyx | 2 |
| AT&T (Teleport) | 1 |
| Lumen (Qwest) | 1 |
| T-Mobile | 1 |
Area codes used in Hillsboro
| Area code | Prefixes serving Hillsboro | Main carriers in this code |
|---|---|---|
| 503 | 6 | Lumen (Qwest), Ziply Fiber, AT&T Mobility |
| 971 | 3 | AT&T Mobility, Onvoy (Sinch), T-Mobile |
Hillsboro phone number prefixes
Numbers starting with these first six digits were originally assigned to the North Plains exchange.
503-389Verizon Business (MCImetro)503-433Verizon Business (MCImetro)503-447AT&T (Teleport)503-647Lumen (Qwest)503-773Lumen (Level 3)503-809T-Mobile971-232Lumen (Level 3)971-247Telnyx971-397Telnyx
Nearby cities in area code 503
Questions
- What is the area code for Hillsboro, OR?
- Hillsboro 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 Hillsboro in?
- Hillsboro is in the Pacific time zone.