Guam country code, +1-671 explained.
Guam, a US territory in the Western Pacific and one of Oceania's most strategically positioned islands, uses the +1-671 country code under the North American Numbering Plan while operating 14–17 hours ahead of the US mainland.
Full dial format
+1-671 XXX XXXXXXX
Guam
GU
2 Digit ISO
+1-671
Country Calling Code
GUM
3 Digit ISO
Capital
Hagåtña
--:--
Saturday, July 18, 2026
Time Zone
Pacific/Guam
Weather · Hagåtña
Humidity
—
Wind
—
How To Call Guam: Country Code +1-671
Calling Guam from abroad is simple. Just follow these four steps to connect.
Know Your Exit Code
Every country has an exit code for international calls. In the US it is "011". Look yours up online — it takes seconds.
Dial Guam Country Code
Dial +1-671 right after your exit code. This is the country code for Guam.
Find the Area Code
Cities in Guam use different area codes. Find the one for the place you are calling.
Dial the Local Phone Number
Enter the 6–8 digit number of the person or business you want to reach.
Example
To call a friend in a Guamcity with the area code and local number, you'd dial (from the US): 011 · +1-671 · [area code] · [local number]
Or use +1-671 directly on mobile — no exit code needed.
Guam — Key Facts & Calling Guide
Everything you need before dialing Guam.
Country Details
- Country Code+1-671
- CapitalHagåtña
- RegionOceania
- TimezonePacific/Guam
- Numbering ZoneZone 1
- Code Length3 digits
How to Dial Guam
- 1Dial your exit code (e.g. 011 from the US, 00 from Europe).
- 2Add the country code: +1-671.
- 3Enter the area code, if the city requires one.
- 4Dial the local subscriber number.
Full Dial Format
Exit Code + 1-671 + Area + Number
Additional Tips
A few things to keep in mind before you dial Guam — from mobile prefixes to timing your call just right.
Mobile Phones
Drop the leading "0" in the area code and dial directly after +1-671 when reaching mobiles in Guam.
Cost
International calls to Guam can cost more than domestic ones — use Teloz VoIP for carrier-grade rates.
Time Differences
Guam runs on Pacific/Guam. It's currently --:-- there — call at a sensible local hour.
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Live country statistics for Guam — population, economy and connectivity at a glance.
Capital
Hagåtña
Population
Area
GDP
Telephones
Mobile Phones
Internet Users
Internet Penetration
Figures reflect the most recent available year · Source: World Bank Open Data
Benefits
Everything you need to connect with Guam and the world — in one place.
Ease of Use
Quickly find the information you need for Guam — country code, dialing steps, local time and more — without complex searches.
Comprehensive
Access Guam's country code +1-671, live weather, capital stats, GDP, connectivity data and more — all in one place.
Accurate & Up-to-date
We pull live data from trusted sources — World Bank, Open-Meteo and ITU — so your Guam information is always current.
With a little preparation, you can confidently call Guam. Remember your exit code, Guam country code +1-671, and find the right area code for your destination. Teloz makes international calling simple — with carrier-grade quality, 500+ direct interconnects, and coverage in 100+ countries. Explore our resources for seamless international communication.
Guam calling, explained.
Everything you need to dial Guam with confidence.
Other Oceania Country Codes
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