Official U.S. Postal Service abbreviations for states
| ALABAMA | AL | MONTANA | MT |
| ALASKA | AK | NEBRASKA | NE |
| ARIZONA | AZ | NEVADA | NV |
| ARKANSAS | AR | NEW HAMPSHIRE | NH |
| CALIFORNIA | CA | NEW JERSEY | NJ |
| COLORADO | CO | NEW MEXICO | NM |
| CONNECTICUT | CT | NEW YORK | NY |
| DELAWARE | DE | NORTH CAROLINA | NC |
| DISTRICT OF COLUMBIA | DC | NORTH DAKOTA | ND |
| FLORIDA | FL | OHIO | OH |
| GEORGIA | GA | OKLAHOMA | OK |
| HAWAII | HI | OREGON | OR |
| IDAHO | ID | PENNSYLVANIA | PA |
| ILLINOIS | IL | RHODE ISLAND | RI |
| INDIANA | IN | SOUTH CAROLINA | SC |
| IOWA | IA | SOUTH DAKOTA | SD |
| KANSAS | KS | TENNESSEE | TN |
| KENTUCKY | KY | TEXAS | TX |
| LOUISIANA | LA | UTAH | UT |
| MARYLAND | MD | VERMONT | VT |
| MASSACHUSETTS | MA | VIRGINIA | VA |
| MICHIGAN | MI | WASHINGTON | WA |
| MINNESOTA | MN | WEST VIRGINIA | WV |
| MISSISSIPPI | MS | WISCONSIN | WA |
| MISSOURI | MO | WYOMING | WY |