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These are the two-letter abbreviations to be used on the license plates, based (with one exception) on the standards of the United States Postal Service (USPS).

When the states are listed in alphabetical order, their abbreviations might not be in alphabetical order.

States
Alabama AL LouisianaLA Ohio OH
Alaska AKMaine MEOklahoma OK
Arizona AZMaryland MDOregon OR
Arkansas ARMassachusetts MAPennsylvania PA
California CAMichigan MIRhode Island RI
Colorado COMinnesota MNSouth CarolinaSC
ConnecticutCTMississippi MSSouth Dakota SD
Delaware DEMissouri MOTennessee TN
Florida FLMontana MTTexas TX
Georgia GANebraska NEUtah UT
Hawaii HINevada NVVermont VT
Idaho IDNew Hampshire NHVirginia VA
Illinois ILNew Jersey NJWashington WA
Indiana INNew Mexico NMWest Virginia WV
Iowa IANew York NYWisconsin WI
Kansas KSNorth CarolinaNCWyoming WY
Kentucky KYNorth Dakota ND

Other Jurisdictions
District of Columbia DC Northern Mariana Islands MP
American Samoa AS Palau PW
Federated States of MicronesiaFM Puerto Rico PR
Guam GU U.S. Virgin Islands VI
Marshall Islands MH The United States itself US

The USPS has also defined two-letter abbreviations for the Canadian provinces and territories; they mostly agree with those assigned by CanadaPost.

Canadian JurisdictionsUSPSCanP
Alberta AB
British Columbia BC
Manitoba MB
New Brunswick NB
Newfoundland (and Labrador)NFNL
Northwest Territories NT
Nova Scotia NS
Nunavut NU
Ontario ON
Prince Edward Island PE
Quebec QC
Saskatchewan SK
Yukon Territory YT