How to call Guam from the US

VoIP calling doesn’t need to be difficult

Before you call...

Check these 3 things:

  • Are you calling a mobile number?

    If you’re calling a mobile number in Guam, you can follow the same steps as if you are calling a landline.
  • Does the number have a trunk code?

    A trunk code is a prefix added for domestic calls – you won’t need to dial it when calling internationally.
  • Is your phone set up for international calls?

    Not all phones come with international calling out of the box. With GoTo Connect, you get free international calling to 50+ countries.

Calling a mobile or landline number


1. Dial country code

Guam's country code is +1.

2. Add area code

Guam's area code is 671

3. Dial phone number

Finally, you're ready to dial your number!
Image of a phone call between a US mobile phone and international number, using 011 to dial outside of the US.

Guam Area Codes

Guam has one area code for the entire region

Hagatna 671 Dededo 671
Tamuning 671 Yigo 671
Mangilao 671 Santa Rita 671
Barrigada 671 Asan 671
Yona 671 Agat 671
Sinajana 671 Merizo 671
Chalan Pago-Ordot 671 Inarajan 671
Talofofo 671 Piti 671
Umatac 671

 

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