Telephone Dialing Code

Country Dialing Code for Guam

Thinking of making a phone call to Guam and not sure what is the country dialing code for Guam or want to know the local telephone area codes of cities in Guam?

Use the links on this page to learn more about how to call a phone number in Guam.

Telephone Dialing Code Guam

How to Call a Guamanian Telephone Number from Abroad?

  • Country Dialing Code for Guam: 502
  • International Call Prefix to call from Guam: 0
  • Trunk Prefix of Local Phone Numbers in Guam: 0

    To call a phone number in Guam, simply:
    • 1. Dial the international access code for your country - (from North America you will need to dial 011; from the UK and other European countries, you will need to dial 00)
    • 2. Dial country code for Guam: 502
    • 3. Dial the phone number in Guam, excluding the 0 at the beginning of the number

    To make a call to Landline Phone Number in Guam from Abroad, the dialling format should be:
    International Access Code - 502 - Area Code - Land Phone Number

    To make a call to Mobile Phone Number in Guam from Abroad, the dialling format should be:
    International Access Code - 502 - Mobile Phone Number

How to call Guam from Australia?

To call a telephone number in Guam from Australia, simply:
1. Dial International Access Code for Australia: 0011
2. Dial country code for Guam: 502
3. Dial the phone number in Guam, excluding the 0 at the beginning of the number

How to call Guam from Canada?

To call a telephone number in Guam from Canada, simply:
1. Dial International Access Code for Canada: 011
2. Dial country code for Guam: 502
3. Dial the phone number in Guam, excluding the 0 at the beginning of the number