List of U.S. State Abbreviations - Other Abbreviations and Codes

Other Abbreviations and Codes

The Federal Information Processing Standard establishes numeric and alphabetic state codes for each state and for many outlying areas. The FIPS numeric code is marked 'FIPS' on the table above. The FIPS alphabetic state code is the same as the USPS code except for U.S. Minor Outlying Islands, which have a FIPS code (UM) but no USPS code—and U.S. Military Mail locations, which have USPS codes (AA, AE, AP) but no FIPS code.

The U.S. Coast Guard uses a set of 2-letter prefixes for vessel numbers, marked on the large table above. The other 39 states and the District of Columbia have the same USPS and USCG abbreviations. USCG prefixes have also been established for five outlying territories, all listed above, though they differ from the USPS code only in the case of the Mariana Islands. The small table below shows the 11 states that are different plus the Mariana Islands.