How to call Guam: country code +1
The country code for Guam is +1.
Guam shares country code +1 with the United States and Canada. Its area code is 671.
From a mobile phone, press +, then 1 and the number. From a landline, start with your own country's exit code.Local time in Guam: --:--
Dial Guam from
From the United States, dial 1, then the 3-digit area code and the 7-digit number. No international code is needed inside the North American numbering plan.
Calling Guam from common countries
| Calling from | What to dial |
|---|---|
| From United States | Dial 1, then the 3-digit area code and the 7-digit number. No international code is needed inside the North American numbering plan. |
| From United Kingdom | Dial 00 (the exit code from the United Kingdom), then 1, then the 3-digit area code and the 7-digit number. |
| From Canada | Dial 1, then the 3-digit area code and the 7-digit number. No international code is needed inside the North American numbering plan. |
| From Australia | Dial 0011 (the exit code from Australia), then 1, then the 3-digit area code and the 7-digit number. |
| From India | Dial 00 (the exit code from India), then 1, then the 3-digit area code and the 7-digit number. |
| From any mobile | Press +, then 1, then the number. |
Codes for Guam
| Country code | +1 |
|---|---|
| Exit code (to call abroad from Guam) | 011 |
| Trunk prefix | 1 |
| Area codes | 671 |
| Time zone | Pacific/Guam |
Inside the North American numbering plan, long-distance calls start with 1.
Example number
| Type | Dialed inside Guam | Written for the world |
|---|---|---|
| Landline | (671) 300-1234 | +1 671-300-1234 |
| Mobile | (671) 300-1234 | +1 671-300-1234 |
Example formats from the official numbering plans, not real numbers.
Questions people ask
What is the country code for Guam?
The country code for Guam is +1. Its area code is 671.
How do I call Guam from the United States?
From the US, dial 1, then the 3-digit area code and the 7-digit number. No international code is needed inside the North American numbering plan.
What is the exit code for calling abroad from Guam?
To call another country from Guam, dial 011 first. From a mobile you can press + instead.
What time is it in Guam now?
The clock on this page shows the current local time in Guam and whether it is a good time to call.
Related: all country codes · time in Guam · time zone converter · meeting planner
Last updated October 21, 2026. Numbering data: ITU-T E.164 country codes via Google's libphonenumber; local time from the IANA time zone database.