Guam Flag SVGGuam Country Codes

Guam is identified by various country codes. The ISO 3166-1-Alpha-2 code, commonly referred to as the 2-letter country code for Guam, is GU, while the ISO 3166-1-Alpha-3 code, known as the 3-letter country code, is GUM. Similarly, the ISO 3166-1 numeric code for Guam is 316. When connecting via phone, the dialing code for Guam is +1-671, which is essential for initiating calls to phone numbers in Guam. Online, websites in Guam are distinguished by the top-level domain (TLD) .gu, indicating their geographic origin. The currency utilized in Guam is the US Dollar, denoted by the currency alphabetic code USD. Commonly known as the US Dollar, it is the primary currency for transactions within the country.

For a comprehensive reference encompassing major country codes, currency codes, and timezones relevant to Guam, please refer the tables below:

Country details

Formal name-
Sub regionMicronesia

ISO Codes

ISO 3166-1 Alpha-2GU
ISO 3166-1 Alpha-3GUM
ISO 3166-1 Numeric316

Dialing Code

Dialing code+1-671

Other Country Codes

Top Level
License plate code-
UN m49 code316
GAUL code101
MARC codegu
WMO codeGM
GS1 GTIN code-

Currency Codes

CurencyAlphabetic codeNumeric code
US DollarUSD840


TimezoneOffset UTCOffset DSTTime
Pacific / Guam+10:00+10:00



Guam is situated in Micronesia, which is a subregion of the continent of Oceania.

Hagatna serves as the capital of Guam.

The ISO 3166-1-Alpha-2, or two-letter country code, for Guam is GU, while the ISO 3166-1-Alpha-3, or three-letter country code, is GUM, and the ISO 3166-1 numeric code is 316. ISO, the International Organization for Standardization, is a global federation of national standards bodies.

The dialing code for Guam is +1-671.

The top-level domain (TLD) for Guam-specific internet addresses ends with .gu.

The currency code of Guam includes the currency alphabetic code USD and the currency numeric code 840. The currency is referred to as the US Dollar. ISO 4217 is a standard published by the International Organization for Standardization, defining alpha codes and numeric codes for representing currencies and providing information about the relationships between individual currencies and their minor units.

The UN M49 code for Guam is 316. UN M49, or the Standard Country or Area Codes for Statistical Use, is a standard used by the United Nations for statistical purposes.

The GAUL code for Guam is 101. GAUL, or the Global Administrative Unit Layers, is a spatial database of administrative units for all countries worldwide. It is a project of the Food and Agriculture Organization of the United Nations.

The MARC code for Guam is gu. MARC, or machine-readable cataloging standards, are a set of digital formats for describing items cataloged by libraries, such as books, DVDs, and digital resources.

The FIPS code for Guam is GQ. FIPS, or Federal Information Processing Standards, are publicly announced standards developed by the National Institute of Standards and Technology for use in computer systems by non-military American government agencies and government contractors.

The WMO code for Guam is GM. WMO, or the World Meteorological Organization, is a specialized agency of the United Nations responsible for promoting international cooperation on atmospheric science, climatology, hydrology, and geophysics.

The IOC code for Guam is GUM. The International Olympic Committee uses three-letter abbreviation country codes to refer to each group of athletes that participate in the Olympic Games. Each geocode usually identifies a National Olympic Committee.

The EDGAR code for Guam is GU. EDGAR, or the Electronic Data Gathering, Analysis, and Retrieval system, performs automated collection, validation, indexing, acceptance, and forwarding of submissions by companies and others who are required by law to file forms with the U.S. Securities and Exchange Commission.

The FIFA code for Guam is GUM. FIFA, or Fédration Internationale de Football Association (International Federation of Association Football), assigns a three-letter country code to each of its member and non-member countries as name abbreviations for countries and dependent areas in official competitions.

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