The +1684 country code belongs to American Samoa, an unincorporated US territory in the South Pacific, about 2,600 miles southwest of Hawaii. The territory consists of five main islands and two coral atolls, with most of the population of roughly 55,000 living on Tutuila, where the capital Pago Pago sits inside one of the deepest natural harbors in the South Pacific.
American Samoa is part of the North American Numbering Plan with area code 684. You dial it like a US number (1-684-XXX-XXXX), but most carriers treat it as an international call and charge accordingly. The territory is also one digit away from independent Samoa (+685), which causes constant confusion.
Quick answer: Dial 1-(684) followed by the 7-digit local number. American Samoa phone numbers are 10 digits total (country code 1 + area code 684 + 7 local digits). There is no trunk prefix. The single area code 684 covers all islands in the territory.
How to call American Samoa: quick reference
Since American Samoa uses NANP area code 684, you dial it from the US and Canada with no international exit code. From other countries, treat it as a +1 number. Note that calling from neighboring Samoa (+685) requires the international prefix — they are separate phone systems despite being geographically close.
| Calling from | Dialing format | Example |
|---|---|---|
| US/Canada mobile | 1-(684)-XXX-XXXX | 1-(684)-633-1234 |
| US/Canada landline | 1-(684)-XXX-XXXX | 1-(684)-633-1234 |
| Within American Samoa | XXX-XXXX (7 digits) | 633-1234 |
| UK | 00-1-684-XXX-XXXX | 00-1-684-633-1234 |
| Australia | 0011-1-684-XXX-XXXX | 0011-1-684-633-1234 |
| New Zealand | 00-1-684-XXX-XXXX | 00-1-684-633-1234 |
| Samoa (+685) | 00-1-684-XXX-XXXX | 00-1-684-633-1234 |
Understanding American Samoa phone numbers
All American Samoa numbers follow the NANP format: +1 (684) XXX-XXXX. The same area code applies across Tutuila, the Manu'a islands (Ta'u, Ofu, Olosega), Rose Atoll, and Swains Island.
Mobile numbers
Mobile numbers use prefixes like 252, 254, 256, 258, 733, 770, and 772. The mobile market is small compared to the mainland US, and most residents use prepaid plans.
Landline numbers
Landline prefixes include 633, 644, 655, 688, and 699. Landlines are concentrated in Pago Pago and the villages along Tutuila's southern coast. The Manu'a islands have limited landline infrastructure, and residents there rely more heavily on mobile service.
Number structure
| Type | Common prefixes | Example |
|---|---|---|
| Landline (Pago Pago) | 633, 699 | (684) 633-xxxx |
| Landline (other) | 644, 655, 688 | (684) 688-xxxx |
| Mobile | 252, 254, 256, 258 | (684) 252-xxxx |
| Mobile | 733, 770, 772 | (684) 733-xxxx |
Mobile carriers in American Samoa
American Samoa's telecom market is small, with two main providers serving the territory.
ASTCA (American Samoa Telecommunications Authority)
The government-owned telecom authority handles landline service across the territory. ASTCA also provides internet and has been expanding mobile coverage. As a government entity, it operates as a utility rather than a competitive carrier.
Bluesky Communications
The primary mobile carrier in American Samoa. Bluesky also operates in neighboring Samoa (+685), which means some residents carry service from both territories. They offer prepaid and postpaid mobile plans, and their network covers Tutuila well, with more limited reach on the Manu'a islands.
T-Mobile / AT&T roaming
US mainland carriers generally do not have native coverage in American Samoa. If you travel there with a US phone, you'll likely roam on Bluesky's network, and charges vary by plan. Check with your carrier before traveling.
Don't confuse +1684 with nearby codes
The biggest source of confusion is the one-digit difference between American Samoa and independent Samoa.
| Code | Country/Territory | Why it's confused |
|---|---|---|
| +1684 | American Samoa | This article (US territory, NANP) |
| +685 | Samoa (Western Samoa) | One digit different, neighboring islands |
| +1671 | Guam | Both US Pacific territories with NANP codes |
| +679 | Fiji | Nearby Pacific island nation |
The +1684 vs +685 mix-up happens constantly. American Samoa is a US territory that uses NANP (you dial 1-684). Samoa is an independent country with its own non-NANP code (+685). They share Samoan culture and language, and families often span both territories, but the phone systems are completely separate. Dialing 1-685 from the US won't reach Samoa — you need to dial 011-685 or +685.
Time zone considerations
American Samoa is on Samoa Standard Time (SST, UTC-11) year-round. No daylight saving time. This makes it one of the last places on Earth to see each new day.
The time gap to the US mainland is large — 6 hours behind California, 11 hours behind New York. Calling from Asia or Europe means an even bigger offset. Plan calls carefully.
| Your location | Time difference | Best calling window |
|---|---|---|
| US West Coast (PST/PDT) | -6hrs winter / -5hrs summer | 3pm-9pm PT (9am-3pm in AS) |
| US East Coast (EST/EDT) | -11hrs winter / -10hrs summer | 8pm-2am ET (9am-3pm in AS) |
| Hawaii (HST) | -1hr | Anytime reasonable |
| New Zealand (NZST/NZDT) | +24hrs / +1 day | Morning NZ = evening AS (previous day) |
| Australia East (AEST/AEDT) | +21hrs / +22hrs | Morning AEST = afternoon AS (previous day) |
A quirk of geography: American Samoa (UTC-11) and neighboring Samoa (UTC+13) are separated by the International Date Line, despite being only about 100 km apart. When it's Monday in American Samoa, it's already Tuesday in Samoa.
Communication in American Samoa
Business hours
Government offices run 8am-4:30pm, Monday through Friday. Banks close by 3pm. Retail hours vary, but most shops in the Pago Pago area close by 5pm. Saturday mornings are active for shopping; Sundays are quiet — church is central to life in American Samoa, and many businesses close entirely.
Network quality
Cell coverage on Tutuila is generally reliable along the main road that circles the island. Interior mountainous areas and the Manu'a islands have weaker coverage. Internet speeds are slower than the US mainland, and undersea cable limitations affect call quality during peak hours. WiFi calling from the territory can be inconsistent.
Language
Samoan and English are both official languages. Government and business communication happens in English, but day-to-day conversation is mostly in Samoan. If you're calling someone in American Samoa, they'll speak English, but be aware that voicemail greetings and automated systems may be in Samoan.
The American Samoa diaspora
Where they went
More Samoans live on the US mainland and in Hawaii than in American Samoa itself. The largest communities are in Honolulu, the San Francisco Bay Area, Los Angeles, Seattle, Salt Lake City, and Anchorage. As US nationals, American Samoans can live and work anywhere in the US without a visa, though they are nationals rather than citizens (a legal distinction that has been the subject of ongoing court cases).
Why they call
Family (aiga) is the center of Samoan culture, and extended family obligations drive most phone traffic. Funerals (fa'alavelave), church events, and family councils (fono) generate urgent calls where people need to coordinate contributions or attendance across time zones. White Sunday (the second Sunday of October, a major children's holiday), Flag Day (April 17), and Christmas are peak calling periods. The tuna canneries in Pago Pago also generate business calls to mainland seafood distributors.
Dialing examples
Calling a government office in Pago Pago
The office number is (684) 633-4116.
- From a US mobile: 1-684-633-4116
- From the UK: 00-1-684-633-4116
- From within American Samoa: 633-4116
Calling a mobile in American Samoa
Your contact's number is (684) 252-7890.
- From a US mobile: 1-684-252-7890
- From Australia: 0011-1-684-252-7890
- From within American Samoa: 252-7890
Calling American Samoa from Samoa (+685)
Despite being neighboring islands, this is an international call. From Samoa, dial 00-1-684-XXX-XXXX. You cannot dial just the 7-digit number or use 1-684 — the full international format is required.
Calling Samoa (+685) from American Samoa
Also an international call. From American Samoa, dial 011-685-XX-XXXX (landline) or 011-685-7X-XXXX (mobile). Do not dial 1-685 — Samoa is not part of NANP.
Common mistakes to avoid
Confusing +1684 (American Samoa) with +685 (Samoa)
This is the number one mistake. +1684 is NANP (dial 1-684 from the US). +685 is a separate country code (dial 011-685 from the US). They are different territories with different phone systems, separated by 100 km and the International Date Line.
Assuming it's a free domestic call
The 1-684 dialing format looks domestic, but most US carriers charge international rates for American Samoa. Check your plan or use a VoIP service like CallSky for predictable rates.
Forgetting the time difference
American Samoa is UTC-11, which puts it 6 hours behind California and 11 hours behind New York. A 9am call from New York arrives at 10pm the previous night in American Samoa. The time gap catches people off guard because it's a US territory and feels like it should be on a US time zone.
Expecting mainland-quality cell service
Coverage on Tutuila is decent along the coast but drops in mountainous areas. The Manu'a islands have limited service. Don't expect calls to connect as reliably as they would on the mainland, especially during heavy rain or when undersea cables are under strain.
Prefer calling over WiFi? See our guide to the best apps for WiFi calling.
Frequently asked questions (FAQ)
What country uses the +1684 code?
The +1684 code belongs to American Samoa, an unincorporated US territory in the South Pacific. The main island is Tutuila, where the capital Pago Pago is located.
What is the difference between +1684 and +685?
+1684 is American Samoa (US territory, part of NANP) and +685 is Samoa (formerly Western Samoa), an independent country. They are separate nations about 100 km apart with different phone systems. Families often span both territories, which is why the codes get mixed up so often.
Is calling American Samoa a domestic US call?
You dial it like a domestic call (1-684-XXX-XXXX), but most US carriers charge international rates. Some plans include American Samoa in their domestic coverage, but this is the exception rather than the rule. Check your carrier's international calling policy.
How many digits are in an American Samoa phone number?
10 digits total: country code 1 + area code 684 + 7-digit local number. Within American Samoa, you dial just the 7 local digits.
What time zone is American Samoa in?
Samoa Standard Time (SST, UTC-11), with no daylight saving time. It's 6 hours behind the US West Coast, 11 hours behind the East Coast, and sits just east of the International Date Line — one of the last places on Earth to see each new day.
Calling other Pacific destinations? Check our guides for Samoa (+685), Fiji (+679), and Tonga (+676).