| State | Standard Abbreviation | Postal Abbreviation | Capital City |
| Alabama | Ala | AL | Montgomery |
| Alaska | Alaska | AK | Juneau |
| Arizona | Ariz | AZ | Phoenix |
| Arkansas | Ark | AR | Little Rock |
| California | Calif | CA | Sacramento |
| Colorado | Colo | CO | Denver |
| Connecticut | Conn | CT | Hartford |
| Delaware | Del | DE | Dover |
| Florida | Fla | FL | Tallahassee |
| Georgia | Ga | GA | Atlanta |
| Hawaii | Hawaii | HI | Honolulu |
| Idaho | Idaho | ID | Boise |
| Illinois | Ill | IL | Springfield |
| Indiana | Ind | IN | Indianapolis |
| Iowa | Iowa | IA | Des Moines |
| Kansas | Kans | KS | Topeka |
| Kentucky | Ky | KY | Frankfort |
| Louisiana | La | LA | Baton Rouge |
| Maine | Maine | ME | Augusta |
| Maryland | Md | MD | Annapolis |
| Massachusetts | Mass | MA | Boston |
| Michigan | Mich | MI | Lansing |
| Minnesota | Minn | MN | St. Paul |
| Mississippi | Miss | MS | Jackson |
| Missouri | Mo | MO | Jefferson City |
| Montana | Mont | MT | Helena |
| Nebraska | Nebr. | NE | Lincoln |
| Nevada | Nev. | NV | Carson City |
| New Hampshire | N.H. | NH | Concord |
| New Jersey | N.J. | NJ | Trenton |
| New Mexico | N.M. | NM | Santa Fe |
| New York | N.Y. | NY | Albany |
| North Carolina | N.C. | NC | Raleigh |
| North Dakota | N.D. | ND | Bismarck |
| Ohio | Ohio | OH | Columbus |
| Oklahoma | Okla | OK | Oklahoma City |
| Oregon | Ore | OR | Salem |
| Pennsylvania | Pa | PA | Harrisburg |
| Rhode Island | R.I. | RI | Providence |
| South Carolina | S.C. | SC | Columbia |
| South Dakota | S.D. | SD | Pierre |
| Tennessee | Tenn | TN | Nashville |
| Texas | Tex | TX | Austin |
| Utah | Utah | UT | Salt Lake City |
| Vermont | Vt | VT | Montpelier |
| Virginia | Va | VA | Richmond |
| Washington | Wash | WA | Olympia |
| West Virginia | W.Va. | WV | Charleston |
| Wisconsin | Wis | WI | Madison |
| Wyoming | Wyo | WY | Cheyenne |
US District, Territory, and Possession Abbreviations and Capitals
| Subdivision | Standard Abbreviation | Postal Abbreviation | Capital City |
| American Samoa | n/a | AS | Pago Pago |
| District of Columbia | D.C. | DC | Washington |
| Federated States of Micronesia | FSM | FM | Palikir |
| Guam | Guam | GU | Hagatna |
| Marshall Islands | n/a | MH | Majuro |
| Northern Mariana Islands | n/a | MP | Saipan |
| Palau | Palau | PW | Koror |
| Puerto Rico | P.R. | PR | San Juan |
| Virgin Islands | V.I. | VI | Charlotte Amalie |