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Guam Calling Code
Guam
+1
ISO GUGUM
Key Facts
- International Calling Code
- +1
- Country Name
- Guam
- Official Name
- Guam
- Capital City
- Hagåtña
- Region
- Oceania
- Subregion
- Micronesia
- ISO 3166-1 Alpha-2
- GU
- ISO 3166-1 Alpha-3
- GUM
Guam Calling Code FAQ
- What is the calling code for Guam?
- +1. From abroad, dial your exit code (or +), then 1, then the national number. Guam is part of the North American Numbering Plan with area code 671.
- Is it +1 or 1?
- Same code. +1 is the portable form for contacts and mobiles. From the US or Canada you dial 1 first, for example 1 671 XXX XXXX.
- Do I need to add a 1 or drop a 0?
- No trunk 0 to drop. Use +1 671 XXX XXXX and don't double the 1.
- Does +1 only mean Guam?
- No. +1 is shared with United States, Canada, Bahamas, Barbados, Anguilla, and 19 others. See the shared country codes guide.
- How do I call Guam from the US or UK?
- From the US or Canada, dial 1 671 XXX XXXX, with no international exit code. From the UK and most of Europe, dial 00 1 671 XXX XXXX.
Notable Area Codes
+1-671
How to Dial Guam
Portable international format
Use +1 followed by the complete national significant number. Do not save an origin-specific exit code such as 00 or 011 as part of the destination number.
Number pattern
- International
- +1 671 XXX XXXX
- From the US or Canada
- 1 671 XXX XXXX(NANP numbers are dialled with a leading 1, not an international exit code)
- From the UK and most of Europe
- 00 1 671 XXX XXXX
There is no trunk 0 to drop. Do not double the 1 (+1 1 671… is wrong).
Other Countries Sharing +1
United StatesCanadaBahamasBarbadosAnguillaAntigua and BarbudaBritish Virgin IslandsUnited States Virgin IslandsCayman IslandsBermudaGrenadaTurks and Caicos IslandsMontserratNorthern Mariana IslandsAmerican SamoaSint MaartenSaint LuciaDominicaSaint Vincent and the GrenadinesPuerto RicoDominican RepublicTrinidad and TobagoSaint Kitts and NevisJamaica
