US

The country code US is the ISO 3166-1 alpha-2 standard two-letter code assigned to the United States of America.
This globally recognized identifier is used across international systems to represent the U.S. in everything from shipping labels and domain names (like .us) to banking transactions and digital forms. Introduced as part of the ISO 3166 standard by the International Organization for Standardization, "US" ensures consistency and clarity in global data exchange. Whether you're selecting a country from a dropdown menu, tracking a package, or configuring software settings, "US" is the official shorthand that stands for the 50 states and territories united under one federal republic.