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Abbreviations for United States: US, U.S., and USA
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Priyanka, from India, asked: When is it correct to spell out United States, and when should we use the abbreviations US, U.S., and USA?
Good question! As with many style questions, there are differences of opinion, but here are some generally accepted guidelines you can follow:
1) Short forms, such as U.S., are common in casual language, and using a full name or title is considered more appropriate in formal language. So, for example, politicians giving formal addresses will almost always say "The United States of America." (The full form is also more dramatic.)
2) In writing, use the full form, United States, as a noun, and U.S. (with periods inserted and no spaces) as an adjective describing another noun, as in these examples:
- In the United States, many people now pay their bills online.
- The U.S. Postal Service is in financial trouble. (U.S. is an adjective describing Postal Service)
3) Finally, use of the abbreviation USA is limited. You will find it in some proper nouns, especially the names of media sources such as the newspaper USA Today, the cable television channel USA Network, and websites like USAhockey.com. It can also be used in mailing addresses and fixed expressions such as "Made in the USA." Unless you are quoting a source, however, you do not need to use it.
I hope this helps!
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