What is the ISO 3166-1 code for United States?

United States uses ISO 3166-1 alpha-2 US, alpha-3 USA, and numeric 840. These codes show up in forms, shipping, banking, and APIs.

How many official ISO 3166-2 subdivisions does United States have?

CountriesDB lists 57 official ISO 3166-2 subdivisions for United States (states, provinces, regions, or equivalent). Use them when you validate region selects and shipping zones.

How do I use United States country and subdivision data in a form?

Use the CountriesDB widget or Data API to fill country and subdivision selects for United States, then validate submitted codes with the Validation API so alpha-2 and ISO 3166-2 values stay consistent.

United States

ISO 3166-1 country codes and official ISO 3166-2 subdivisions for United States. Use them in forms, validation, and CountriesDB integrations.

About United States codes

Need United States (US) 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 57 official ISO 3166-2 subdivisions for United States. These are the same codes CountriesDB serves through widgets and the Backend Data API.

For production, use the CountriesDB country/subdivision widget or fetch United States from the Data API and validate codes server-side instead of copying values from this page.

ISO codes

Alpha-2US
Alpha-3USA
Numeric840
Independenttrue
StatusOfficially assigned

Official subdivisions (57)

Official ISO 3166-2 codes for United States. Use these values in region/state selects and server-side validation, not informal or marketing region names.

Code	Name	Type
US-AL	Alabama	state
US-AK	Alaska	state
US-AS	American Samoa	outlying area
US-AZ	Arizona	state
US-AR	Arkansas	state
US-CA	California	state
US-CO	Colorado	state
US-CT	Connecticut	state
US-DE	Delaware	state
US-DC	District of Columbia	district
US-FL	Florida	state
US-GA	Georgia	state
US-GU	Guam	outlying area
US-HI	Hawaii	state
US-ID	Idaho	state
US-IL	Illinois	state
US-IN	Indiana	state
US-IA	Iowa	state
US-KS	Kansas	state
US-KY	Kentucky	state
US-LA	Louisiana	state
US-ME	Maine	state
US-MD	Maryland	state
US-MA	Massachusetts	state
US-MI	Michigan	state
US-MN	Minnesota	state
US-MS	Mississippi	state
US-MO	Missouri	state
US-MT	Montana	state
US-NE	Nebraska	state
US-NV	Nevada	state
US-NH	New Hampshire	state
US-NJ	New Jersey	state
US-NM	New Mexico	state
US-NY	New York	state
US-NC	North Carolina	state
US-ND	North Dakota	state
US-MP	Northern Mariana Islands	outlying area
US-OH	Ohio	state
US-OK	Oklahoma	state
US-OR	Oregon	state
US-PA	Pennsylvania	state
US-PR	Puerto Rico	outlying area
US-RI	Rhode Island	state
US-SC	South Carolina	state
US-SD	South Dakota	state
US-TN	Tennessee	state
US-TX	Texas	state
US-UM	United States Minor Outlying Islands	outlying area
US-UT	Utah	state
US-VT	Vermont	state
US-VI	Virgin Islands, U.S.	outlying area
US-VA	Virginia	state
US-WA	Washington	state
US-WV	West Virginia	state
US-WI	Wisconsin	state
US-WY	Wyoming	state

Frequently asked questions

What is the ISO 3166-1 code for United States?: United States uses ISO 3166-1 alpha-2 US, alpha-3 USA, and numeric 840. These codes show up in forms, shipping, banking, and APIs.
How many official ISO 3166-2 subdivisions does United States have?: CountriesDB lists 57 official ISO 3166-2 subdivisions for United States (states, provinces, regions, or equivalent). Use them when you validate region selects and shipping zones.
How do I use United States country and subdivision data in a form?: Use the CountriesDB widget or Data API to fill country and subdivision selects for United States, then validate submitted codes with the Validation API so alpha-2 and ISO 3166-2 values stay consistent.

Use United States in your app

Add CountriesDB country and subdivision selects with the widget docs, or call the Backend Data API for United States (US) and validate submissions with the Validation API. Guides stay in sync with the same dataset your project keys already use. widget docs.