Calling Codes

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Guam Country Phone Code: +1671

We want to make sure that staying connected to loved ones in Guam is as easy as possible. So, we’ve put together a guide on how to call Guam for you.

Here is everything you should know about Guam area codes and the localities/regions they serve.

LOCAL TIME TIME ZONE

Saturday, April 26, 2025

Hagåtña 		UTC+10:00 HOURS
DAYLIGHT SAVING TIME
Not In DST
WEATHER DIFFERENCE

30.6°C

 PartlyCloudy 26.8/31.7°C
Hagåtña, Guam is 5 hours ahead of you (5:31:49 AM)

How to Call Guam?

Calling Guam does not have to be complicated. To call Guam, follow these three simple steps:

  1. Begin by dialing the exit country code.
  2. Now dial the Guam country code: +1671 along with the area code you want to call in.
  3. Lastly, dial the recipient’s number.

Dialing Instructions

Follow these dialing instructions to call loved ones.

  1. Dial the International Direct Dialing (IDD) number. Countries have different numbers, or may have more than one IDD, depending on the carrier or type of service.
  2. Dial the Country Code. In some cases, the country code is shared among countries. For example, the United States, Canada, and much of the Caribbean and Guam use country code 1.
  3. Dial the city/area code (if any) for the number you are dialing. Smaller countries may not use city codes or area codes, while larger countries have hundreds of them.
  4. Dial the phone number you are calling.

00

+1671

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IDD

Country Code

City Code

Phone Number

Complete List of Guam Area Phone Codes

Here’s a comprehensive list of all the dialing codes you need to connect with loved ones in Guam.

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City Dial Codes
Guam +1671-(1)671

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Frequently Asked Questions

Explore quick answers to some questions about Guam calling codes.

To make an international call to Guam, start by dialling your origination country's international dialling prefix. This code varies for each country.

For example, if you'd like to call Guam from the USA, your international dialling prefix is 011. If you're in the UK or other parts of Europe, your prefix is 00.

Next, dial the Guam country code - 1671. Then, input the local area code along with the phone number you'd like to call.

A correctly dialled number should look something like this:(00)(1671) XXXX-XXXX-XX.

Guam is identified by GU as the two-letter ISO (alpha-2) code.
GUM is the three-letter ISO (alpha-3) code for Guam.

1671 is the country dialling code for Guam. It is used to make international calls from abroad to connect to any phone number in Guam.

Guam phone numbers generally consist of 7 digits, including the country code and the local area code.

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