Guam Country Code — +1-671

+1-671 is the international dialling code for Guam. Numbers in Guam start with this prefix when dialled from abroad.

Field	Value
Country	Guam
Dialling code	+1-671
ISO code	GU / GUM
Region	Oceania · Micronesia
Capital	Hagatna
Languages	en-GU,ch-GU
Currency	USD — US Dollar
Internet TLD	.gu

How to call Guam

To call Guam from another country, dial your international access prefix, then 1 671, then the local number.

From the United States or Canada: 011 1 671, then the local number.
From most other countries: 00 1 671, then the local number (some countries use 0011, 010 or another carrier prefix — check your operator).
From a mobile phone abroad: +1 671 works on almost every network.

Guam uses the North American Numbering Plan, so numbers are +1 + area code + 7 digits. Dialling is exactly the same as calling the US or Canada, and 10-digit dialling applies.

Other countries in Oceania

American Samoa +1-684 Australia +61 Christmas Island +61 Cocos Islands +61 Cook Islands +682 Fiji +679 French Polynesia +689 Heard & McDonald Islands +672 Kiribati +686 Marshall Islands +692 Micronesia +691 Nauru +674 New Caledonia +687 New Zealand +64 Niue +683 Norfolk Island +672 Northern Mariana Islands +1-670 Palau +680

All country calling codes · How international dialling works

Frequently asked questions

What country is +1-671?

+1-671 is the international dialling code for Guam, with capital Hagatna.

How do I call Guam from the US?

Dial 011, then 1 671, then the local number. From a mobile phone you can also dial +1 671 followed by the local number.

Is calling Guam the same as calling the US?

Yes for dialling. Numbers use +1, a 3-digit area code and 7 digits, but your carrier may still bill it as an international call.