Guam country code: +1
Local time UTC+10
Country code
Dial Guam
+1
A mobile number from abroad: +1 671 300 1234. Mobile numbers have 10 digits after the country code.
With Evricall
Call Guam with Evricall
Call any mobile or landline in Guam with the Evricall app. The app shows the price per minute before you call.
Call GuamHow to call Guam from abroad
Guam is part of the North American numbering plan (+1). From the US and Canada dial 1, then the 10-digit number. From anywhere else dial your exit code, then 1 and the number.
Phone numbers in Guam
- Landlines use area code 671 after +1
- Mobile numbers: 10 digits after +1
- From abroad: +1 671 300 1234
- Written in Guam: (671) 300-1234
- Calling out of Guam: dial 011, then the country code
Example numbers and prefixes: libphonenumber-js 1.13.15 (Google libphonenumber metadata). Updated .
Time zone in Guam
Guam is on UTC+10.
Source: countries-and-timezones 3.11.0 (IANA tz database).
Guam country code questions
What is the country code for Guam?
+1. Dial your exit code or +, then 1, then the local number.
How do I call Guam from the US or Canada?
Dial 1, then the 10-digit number, for example 1 671 300 1234. It's a North American number, so no exit code is needed.
How do I call Guam from the UK or Europe?
Dial 00 1 671 300 1234. On a mobile you can dial +1 671 300 1234 instead.
How many digits does a Guam mobile number have?
10 digits after the country code +1, for example +1 671 300 1234.
What time zone is Guam in?
UTC+10.