Hawaii 2 letter code

Hawaii’s two-letter USPS postal abbreviation is HI. Use uppercase letters without periods in a postal address. The state abbreviation identifies Hawaii; it does not identify a particular island, city, or ZIP Code.

Meaning and context

A complete mailing address still needs the recipient, delivery address, city, and correct ZIP Code. Do not replace the city with an island name unless that is actually part of the validated address. The abbreviation is only one component of delivery information.

Examples and usage

On a mailing label, HI appears in the state position before the ZIP Code. In ordinary prose, spelling out Hawaii is often clearer. An airport code or another travel code serves a different purpose and should not be substituted for the postal abbreviation.

What to check

A two-letter abbreviation found outside an address can have other meanings. Interpret HI as Hawaii when the field or context calls for a state. Verify unfamiliar address details through the postal service or the recipient rather than guessing from an abbreviation.

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