U.S. Outlying Islands
ISO 3166-1 country codes and official ISO 3166-2 subdivisions for U.S. Outlying Islands. Use them in forms, validation, and CountriesDB integrations.
About U.S. Outlying Islands codes
Need U.S. Outlying Islands (UM) for a checkout form, shipping zone, or backend validation? This page summarizes the ISO 3166-1 country codes and official subdivisions developers use with CountriesDB.
This guide lists 9 official ISO 3166-2 subdivisions for U.S. Outlying Islands. These are the same codes CountriesDB serves through widgets and the Backend Data API.
For production, use the CountriesDB country/subdivision widget or fetch U.S. Outlying Islands from the Data API and validate codes server-side instead of copying values from this page.
ISO codes
Official subdivisions (9)
Official ISO 3166-2 codes for U.S. Outlying Islands. Use these values in region/state selects and server-side validation, not informal or marketing region names.
| Code | Name | Type |
|---|---|---|
| UM-81 | Baker Island | islands, groups of islands |
| UM-84 | Howland Island | islands, groups of islands |
| UM-86 | Jarvis Island | islands, groups of islands |
| UM-67 | Johnston Atoll | islands, groups of islands |
| UM-89 | Kingman Reef | islands, groups of islands |
| UM-71 | Midway Islands | islands, groups of islands |
| UM-76 | Navassa Island | islands, groups of islands |
| UM-95 | Palmyra Atoll | islands, groups of islands |
| UM-79 | Wake Island | islands, groups of islands |
Frequently asked questions
- What is the ISO 3166-1 code for U.S. Outlying Islands?
- U.S. Outlying Islands uses ISO 3166-1 alpha-2 UM, alpha-3 UMI, and numeric 581. These codes show up in forms, shipping, banking, and APIs.
- How many official ISO 3166-2 subdivisions does U.S. Outlying Islands have?
- CountriesDB lists 9 official ISO 3166-2 subdivisions for U.S. Outlying Islands (states, provinces, regions, or equivalent). Use them when you validate region selects and shipping zones.
- How do I use U.S. Outlying Islands country and subdivision data in a form?
- Use the CountriesDB widget or Data API to fill country and subdivision selects for U.S. Outlying Islands, then validate submitted codes with the Validation API so alpha-2 and ISO 3166-2 values stay consistent.
Use U.S. Outlying Islands in your app
Add CountriesDB country and subdivision selects with the widget docs, or call the Backend Data API for U.S. Outlying Islands (UM) and validate submissions with the Validation API. Guides stay in sync with the same dataset your project keys already use. widget docs.