Guam area code: 671 covers the whole territory
Guam has just one area code, 671, and it has been in service since 1997.
- The area code
- 671
- Serving since
- 1997
- Local time zone
- Chamorro (UTC+10)
- Exhaust projection
- More than 100 years from now
- From outside the country
- +1 671, along with the 7-digit number
Sources: NANPA report on area codes, report on rate centres and exhaust projections, file dated 11/01/2026. We are not an official NANPA site.
How Guam received its area code
Since 1997, 671 has served Guam. NANPA lists no codes split off from 671.
Will a new area code be assigned in Guam?
During this century, there will be no new code. NANPA forecasts that 671 will last more than 100 years.
| NANPA forecast | Forecast exhaust |
|---|---|
| 2026.1 | More than 100 years from now |
| 2025.2 | 2142 4Q |
| 2025.1 | 2147 4Q |
| 2024.2 | 2147 4Q |
| 2024.1 | 2148 4Q |
| 2023.2 | 2148 3Q |
Questions about the Guam area code
Which area code does Guam use?
671, and it covers the whole territory.
What steps do I take to get a Guam number?
You can get a 671 number from any provider that assigns local numbers. Compare first-year cost across providers.
For a local call in Guam, do I use the area code?
Yes, you do. Calls inside 671 use 10-digit dialling for local calls and 1 + 10-digit dialling for long-distance calls. If you call from abroad, dial +1 671 first.