COUNTRY CODES

ISO country codes (ISO 3166-1)

Countries and many territories have international ISO country codes. They help identify places in web services, statistics and information systems. There are three code formats: two letters, three letters and three digits.

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ISO 3166-1 code types

Two letters — Alpha-2

ISO 3166-1 Alpha-2

Alpha-2 is a two-letter country code, such as FI.

All Alpha-2 codes →

Three letters — Alpha-3

ISO 3166-1 Alpha-3

Alpha-3 is a three-letter country code, such as FIN.

All Alpha-3 codes →

Three digits — Numeric-3

ISO 3166-1 Numeric-3

Numeric is a three-digit country code, such as 246.

All numeric codes →

What do ISO country codes look like?

Each country has three ISO 3166-1 code formats. Here are a few examples.

Name	Alpha-2	Alpha-3	Numeric-3
Finland	`FI`	`FIN`	`246`
Sweden	`SE`	`SWE`	`752`
Germany	`DE`	`DEU`	`276`
Japan	`JP`	`JPN`	`392`
United States	`US`	`USA`	`840`
Albania	`AL`	`ALB`	`008`

What are ISO 3166-1 codes used for?

Web services can use a code to select a country in a form. Statistics use codes to distinguish countries and territories. Information systems can use the same identifier regardless of language. Many country-code domains are associated with a two-letter ISO code, but the code and domain ending do not always match: the United Kingdom’s ISO code is GB, while its domain ending is .uk.

You can also browse Country code top-level domains.