Browse GU area codes and open individual area code pages for location, major cities, time zone, introduction date, overlay or related codes, and dialing information.
About Guam Area Codes
Area Codes Atlas currently lists 1 published area code page associated with Guam. Use the directory above to open each code page and review its location, listed cities, time zone, introduction date, and related or overlay code information. The introduction-year data available in this directory includes 1997.
Frequently Asked Questions About Guam Area Codes
How many Guam area codes are listed?
Area Codes Atlas currently has 1 published area code page associated with Guam.
How can I find information about a specific Guam area code?
Select an area code from the directory above. Each code page includes the available location, city, time zone, introduction-date, related-code, and dialing information.
Counts, cities, time zones, and introduction-year summaries on this page are generated from the current published Area Codes Atlas directory and may change as the directory is updated.