Guam country codes

Guam at a glance

The ISO country identifiers for Guam are GU, GUM, and 316. Select the format your form or system requests.

Namename

Guam

Native name in sourcenative_name

Guam

Capital / administrative centrecapital

Hagatna

Continentcontinent

Oceania (OC)

Regionregion

Oceania

Sub-regionsub_region

Micronesia

Calling prefixes, currency & internet domain

International calling prefixdial_code

+1 671

Currency referencecurrency_code

USDUS Dollar

Country-code domaintld

.gu

A listed telephone prefix may combine a shared country calling code with an area code. It is not a complete phone number.

Languages & native names

Languages listed for Guam in the reference source, with native language names where available. This is not an exhaustive list of the languages spoken or a statement of their legal status.

The small codes are source language tags. A tag such as en-US includes a language and a regional variant; it is different from an ISO country code on its own.

Guam time zones

1 identifier is listed for GU in IANA zone.tab, release 2026d. Time-zone identifiers describe clock-rule locations, not fixed UTC offsets.

• Pacific/Guam

UTC offsets and daylight-saving rules depend on the date and location. Use the time-zone converter to compare local times for a chosen date.

ISO, sporting & legacy identifiers

These code systems serve different purposes. Similar-looking codes can refer to different places or organisations.

ISO alpha-2iso_alpha_2

GU

ISO alpha-3iso_alpha_3

GUM

ISO numericiso_numeric

316

FIFA referencefifa

GUM

IOC referenceioc

GUM

Legacy FIPS-style referencefips

GQ

FIFA and IOC values are source references, not confirmation of current membership or event participation. FIPS 10-4 was withdrawn in 2008; legacy FIPS-style values are for interpreting older datasets and must not replace current ISO codes.

Sources & reference notes

The base record is from ListBase.org v2026.08. English and native country names use Annexare Countries, language names use Annexare and runtime display-name data, time zones use IANA 2026d, and the locally hosted flag is from flag-icons.