NC North Dakota N. OK Oregon Ore. Postal Workers Bitten by Dogs, by District.
RI South Carolina S. KS Kentucky Ky. Though it is usually preferable to write out the full name, space constraints often require use of an abbreviation. MT Nebraska Nebr.
SC South Dakota S. KY Louisiana La. The postal code abbreviation should be used only in mailing addresses. WI Wyoming Wyo.
State Abbreviation Postal code Alabama Ala. NH New Jersey N.
PR Rhode Island R. NY North Carolina N.
FL Georgia Ga. AZ Arkansas Ark. TN Texas Tex. CO Connecticut Conn.
Since the Postal Service instituted ZIP codes and their accompanying state postal codes in 1963, the two-letter abbreviations have steadily gained popularity.