The United States Postal Service has established a set of abbreviations to help process mail with optical character recognition and other automated equipment.[6] There are also official USPS abbreviations for other parts of the address, such as street designators (street, avenue, road, etc.).
The traditional abbreviations for U.S. states and territories, widely used in mailing addresses prior to the introduction of two-letter U.S. postal abbreviations, are still used for other purposes, and are still recognized by the U.S. Postal Service.
The table below shows the US Postal Service (USPS) abbreviation for each of the United States, districts, territories, and possessions.
| U.S. State | U.S. State Abbreviations |
|---|---|
| ALABAMA | AL |
| ALASKA | AK |
| AMERICAN SAMOA | AS |
| ARIZONA | AZ |
| ARKANSAS | AR |
| CALIFORNIA | CA |
| COLORADO | CO |
| CONNECTICUT | CT |
| DELAWARE | DE |
| DISTRICT OF COLUMBIA | DC |
| FEDERATED STATES OF MICRONESIA | FM |
| FLORIDA | FL |
| GEORGIA | GA |
| GUAM | GU |
| HAWAII | HI |
| IDAHO | ID |
| ILLINOIS | IL |
| INDIANA | IN |
| IOWA | IA |
| KANSAS | KS |
| KENTUCKY | KY |
| LOUISIANA | LA |
| MAINE | ME |
| MARSHALL ISLANDS | MH |
| MARYLAND | MD |
| MASSACHUSETTS | MA |
| MICHIGAN | MI |
| MINNESOTA | MN |
| MISSISSIPPI | MS |
| MISSOURI | MO |
| MONTANA | MT |
| NEBRASKA | NE |
| NEVADA | NV |
| NEW HAMPSHIRE | NH |
| NEW JERSEY | NJ |
| NEW MEXICO | NM |
| NEW YORK | NY |
| NORTH CAROLINA | NC |
| NORTH DAKOTA | ND |
| NORTHERN MARIANA ISLANDS | MP |
| OHIO | OH |
| OKLAHOMA | OK |
| OREGON | OR |
| PALAU | PW |
| PENNSYLVANIA | PA |
| PUERTO RICO | PR |
| RHODE ISLAND | RI |
| SOUTH CAROLINA | SC |
| SOUTH DAKOTA | SD |
| TENNESSEE | TN |
| TEXAS | TX |
| UTAH | UT |
| VERMONT | VT |
| VIRGIN ISLANDS | VI |
| VIRGINIA | VA |
| WASHINGTON | WA |
| WEST VIRGINIA | WV |
| WISCONSIN | WI |
| WYOMING | WY |
| Military States | Abbreviation |
| Armed Forces Africa | AE |
| Armed Forces Americas | AA |
| Armed Forces Canada | AE |
| Armed Forces Europe | AE |
| Armed Forces Middle East | AE |
| Armed Forces Pacific | AP |
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