Each of the 50 States in the United States has an abbreviation that is used for various reason but mainly used for postal services. Other uses of the state abbreviations are data collection, regulations in licensing such as boating, driving, hunting, fishing etc.
Alabama ~ AL
Alaska ~ AK
Arizona ~ AZ
Arkansas ~ AR
California ~ CA
Colorado ~ CO
Connecticut ~ CT
Delaware ~ DE
Florida ~ FL
Georgia ~ GA
Hawaii ~ HI
Idaho ~ ID
Illinois ~ IL
Indiana ~ IN
Iowa ~ IA
Kansas ~ KS
Kentucky ~ KT
Louisiana ~ LA
Maine ~ ME
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
Ohio ~ OH
Oklahoma ~ OK
Oregon ~ OR
Pennsylvania ~ PA
Rhode Island ~ RI
South Carolina ~ SC
South Dakota ~ SD
Tennessee ~ TN
Texas ~ TX
Utah ~ UT
Vermont ~ VT
Virginia ~ VA
Washington ~ WA
West Virginia ~ WV
Wisconsin ~ WI
Wyoming ~ WY