Home › Washington › Black Diamond
Black Diamond, WA Area Code
Black Diamond, Washington (population 6,978) uses area code 360.
Carriers with Black Diamond numbers
4 prefixes are assigned to the Black Diamond exchange: 0% mobile, 75% VoIP and cable, 25% landline.
| Carrier | Prefixes |
|---|---|
| Onvoy (Sinch) | 2 |
| AT&T (Teleport) | 1 |
| Lumen (Qwest) | 1 |
Area codes used in Black Diamond
| Area code | Prefixes serving Black Diamond | Main carriers in this code |
|---|---|---|
| 360 | 4 | Lumen (Qwest), Verizon Wireless, Ziply Fiber |
Black Diamond phone number prefixes
Numbers starting with these first six digits were originally assigned to the Black Diamond exchange.
360-469Onvoy (Sinch)360-851AT&T (Teleport)360-886Lumen (Qwest)360-997Onvoy (Sinch)
Nearby cities in area code 360
- Vancouver
- Bellingham
- Marysville
- South Hill
- Lacey
- Olympia
- Bremerton
- Edmonds
- Longview
- Mount Vernon
- Orchards
- Tumwater
Questions
- What is the area code for Black Diamond, WA?
- The area code for Black Diamond, Washington is 360.
- What time zone is Black Diamond in?
- Black Diamond is in the Pacific time zone.