American Samoa is served by a single area code as of 2026. This guide walks through which code it is, when it was assigned, how it has held up against population growth, and what the prospects look like for additional codes in the future.
The Short Answer
American Samoa currently has one active area code in service. The code has held its territory without needing relief since it was assigned, which reflects American Samoa’s population size and the rate at which new phone lines are being activated in the state.
American Samoa has roughly 46,765 residents as of the most recent estimates. That population, combined with the spread of mobile and VoIP lines per household, determines how often new area codes are needed.
The American Samoa Area Code
The active area codes serving American Samoa are listed below, in numerical order. Where a code is an overlay or a split-off from an earlier code, that relationship is noted.
- 684 — All of American Samoa, including Tutuila, Aunuu02bbu, the Manuu02bba Islands (Ofu, Olosega, Tau02bbu016b), Swains Island, and Rose Atoll
How American Samoa’s Area Codes Grew Over Time
American Samoa received its first area code after the original 1947 NANP launch. The full sequence of code activations and splits is laid out below.
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Browse American Samoa Area Codes →- 1947 — American Samoa was not included when AT&T and the Bell System established the North American Numbering Plan; the territory used the ITU country code 684 instead.
- 2002 — The FCC authorized American Samoa's entry into the North American Numbering Plan on December 24, 2002.
- 2003 — Area code 684 was assigned on January 24, 2003, reusing the digits of the territory's former ITU country code.
- 2004 — 684 was installed on October 2, 2004, when a six-month permissive dialing period began and central office codes became available for order; American Samoa became the only NANP area south of the equator.
What’s Next for American Samoa Area Codes
American Samoa has a single area code, 684, serving a population of roughly 47,000 across all of the territory’s islands. With one numbering plan area covering the entire territory and a small, slowly declining population, demand on the 684 numbering pool is minimal. NANPA’s current NPA exhaust projections do not place 684 on any relief schedule, and no split or overlay is anticipated for the foreseeable future.
Frequently Asked Questions
How many area codes does American Samoa have?
American Samoa has one area code, 684, which covers the entire territory. There are no splits or overlays, so every landline and mobile number in American Samoa uses the 684 prefix.
What is the oldest area code in American Samoa?
684 is the oldest active area code in American Samoa, assigned in 1947 when the North American Numbering Plan launched. It remains in service today, though its geographic footprint has typically been reduced by subsequent splits and overlays.
What is the newest area code in American Samoa?
The most recent area code addition to American Samoa was 684, activated in 2004. New phone lines provisioned in its service area are increasingly drawn from this code as older overlays approach exhaustion.
Why is American Samoa's area code 684?
Before joining the North American Numbering Plan, American Samoa used 684 as its ITU international country code. When the territory entered the NANP in 2004, it kept the same three digits as its new area code, which made the transition simpler for existing numbers.
Is American Samoa part of the North American Numbering Plan?
Yes. American Samoa joined the North American Numbering Plan in 2004, which means it dials with the +1 country code like the rest of the United States. It is the only NANP area located south of the equator.
How do you dial a phone number in American Samoa?
Calls within American Samoa are local and use seven digits, or the prefix 0 followed by the area code. From the U.S. mainland, dial 1, then 684, then the seven-digit number.
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