Region
U.S. Territories Area Codes
Puerto Rico, the U.S. Virgin Islands, Guam, the Northern Mariana Islands and American Samoa are full members of the North American Numbering Plan and dial exactly like the 50 states. The U.S. Territories covers 5 jurisdictions and 6 area codes.
Full breakdown
U.S. Territories states & their codes
| State | Codes | Area codes |
|---|---|---|
| American Samoa | 1 | 684 |
| Guam | 1 | 671 |
| Northern Mariana Islands | 1 | 670 |
| Puerto Rico | 2 | 787, 939 |
| U.S. Virgin Islands | 1 | 340 |
About area codes in the U.S. Territories
Puerto Rico, the U.S. Virgin Islands, Guam, the Northern Mariana Islands and American Samoa are full members of the North American Numbering Plan and dial exactly like the 50 states. Across the region's 5 jurisdictions, the directory tracks 6 active area codes. The heaviest concentrations are in Puerto Rico, U.S. Virgin Islands, and Guam, where large metros run overlays to keep up with demand.
At the other end, 4 states in the region still get by on a single area code, where seven-digit local dialing may persist. For the rules behind these changes, see how area codes work and 10-digit dialing.
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