Where Is Area Code 670?
Area code 670 serves the Northern Mariana Islands (MP), a U.S. commonwealth in the western Pacific Ocean. The islands are part of the Mariana Archipelago, north of Guam, and belong to the U.S. Census region known as U.S. Territories.
Saipan is the primary city and the largest island in the commonwealth. Area code 670 also covers the municipalities of Tinian, Rota, and Northern Islands. The Northern Mariana Islands use municipalities rather than counties for local government divisions.
Capitol Hill, located on Saipan, is the seat of the CNMI government. Notable features and landmarks include Mount Tapochau, American Memorial Park, and The Grotto, a limestone cavern on Saipan's western coast.
Cities and Communities in the 670 Area Code
- Saipan
- Capitol Hill, Saipan
- Chalan Kanoa, Saipan
- Garapan, Saipan
- Susupe, Saipan
- Tinian
- San Jose, Tinian
- Rota
- Songsong, Rota
History of Area Code 670
Area code 670 was established on July 1, 1997, when the Northern Mariana Islands joined the North American Numbering Plan. Before that transition, the islands used international telephone dialing instead of a North American area code. The change placed the CNMI under the +1 country code and assigned it the geographic code 670.
Area code 670 remains the sole geographic area code for the Northern Mariana Islands. No overlay or additional split has been assigned to the code. The same code covers telephone service on Saipan, Tinian, Rota, and the Northern Islands.
Key Facts About Area Code 670
- Area code 670 serves the Northern Mariana Islands (MP), a U.S. commonwealth in the U.S. Territories Census region.
- Saipan is the primary city associated with area code 670.
- Area code 670 is a geographic area code within the North American Numbering Plan.
- The 2020 U.S. Census counted 47,329 residents in the Northern Mariana Islands, the territory covered by area code 670.
- Area code 670 was established on July 1, 1997, when the CNMI joined the North American Numbering Plan.
- Area code 670 uses Chamorro Time.
- Northern Marianas College is located on Saipan.
- American Memorial Park and Mount Tapochau are notable landmarks in the 670 service area.
Frequently Asked Questions
What state is area code 670 in?
Area code 670 is in the Northern Mariana Islands (MP), a U.S. commonwealth.
What major cities use area code 670?
Saipan is the primary city, and the code also covers communities on Tinian and Rota.
What time zone is area code 670 in?
Area code 670 uses Chamorro Time.
Is area code 670 a toll-free number?
No. Area code 670 is a geographic area code, not a toll-free code.