Cities in area code 670
These are the cities and communities covered by 670 in Northern Mariana Islands. "Covered" means the locality is a rate center holding 670 prefixes; the largest are Saipan, Tinian, Rota.
Saipan, Tinian and Rota hold the largest prefix inventories. Each locality below links to its rate-center page with the full prefix list.
Territory status changes nothing about the numbering: these Northern Mariana Islands communities are standard NANP rate centers, dialed domestically from anywhere in the US.
All of the code's territory keeps Chamorro time.
Remember that people keep numbers when they relocate, so a 670 number is a where-it-was-issued fact, not a where-they-are fact.
| Locality (rate center) | Active prefixes | Metro area | All codes serving it |
|---|---|---|---|
| Saipan | 31 | — | 670 |
| Tinian | 2 | — | 670 |
| Rota | 2 | — | 670 |
FAQ
What is the biggest city in area code 670?
Saipan holds the most active prefixes (31), making it the code's largest numbering locality.
How many places does 670 cover?
3 rate centers in Northern Mariana Islands hold active 670 prefixes, from Saipan down to communities with a single prefix.
Does a 670 number guarantee the caller lives in one of these places?
No — the tables show where number blocks were issued. Porting and VoIP let people keep or acquire numbers anywhere.