U.S. Minor Outlying Islands country codes

U.S. Minor Outlying Islands at a glance

The ISO country identifiers for U.S. Minor Outlying Islands are UM, UMI, and 581. Select the format your form or system requests.

Namename

U.S. Minor Outlying Islands

Native name in sourcenative_name

United States Minor Outlying Islands

Capital / administrative centrecapital

Not listed

Continentcontinent

Oceania (OC)

Regionregion

Oceania

Sub-regionsub_region

Micronesia

Calling prefixes, currency & internet domain

International calling prefixdial_code

Not listed

Currency referencecurrency_code

USDUS Dollar

Country-code domaintld

.um

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 U.S. Minor Outlying Islands 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.

U.S. Minor Outlying Islands time zones

2 identifiers are listed for UM in IANA zone.tab, release 2026d. Time-zone identifiers describe clock-rule locations, not fixed UTC offsets.

• Pacific/Midway
• Pacific/Wake

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

UM

ISO alpha-3iso_alpha_3

UMI

ISO numericiso_numeric

581

FIFA referencefifa

Not listed / not usable in source

IOC referenceioc

Not listed / not usable in source

Legacy FIPS-style referencefips

a

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 FIPS 10-4 was withdrawn in 2008; legacy FIPS-style values are for interpreting older datasets and must not replace current ISO codes.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.