USA ISO Country Code: US / USA / 840

United States = US (alpha-2), USA (alpha-3), 840 (numeric) under ISO 3166-1.

Key facts

Frequently asked questions

What is the USA's 2-letter country code?

The United States' ISO 3166-1 alpha-2 code is US; alpha-3 is USA and numeric is 840.

Is it US or USA in ISO codes?

US is the alpha-2 (2-letter) code; USA is the alpha-3 (3-letter) code. Both are valid ISO 3166-1.

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USA Country Code (US) is part of Standards & Sizes on GOAT Lab — a free reference you can use without signing up, and it works offline. Open the tool above for any custom value.

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