List of United States Postal Codes and State Abbreviations
For as long as the states have been around, people have been abbreviating their names. Whether simply for convenience or to comply with the post office's 23-character per line preference in addresses, state abbreviations are widely used.
State Postal Codes are used all the time and many are immediately obvious. FL stands for Florida, CA for California, and TX for Texas. However not ever abbreviation is so easy. Does AL stand for Alaska or Alabama? (Spoiler: it's Alabama). What is Louisiana's abbreviation, again? (LO for Louisiana, not LA).
These commonly used abbreviations were standardized in October 1963 by the U.S. Post Office (USPS). Before that, the preferred state abbreviations were mostly 4 letters.
Since 1963, the Post Office has changed only one code. In 1969, Nebraska was changed from NB to NE. This change was done for consistency sake. Most other states' abbreviations are the first two letters of the state unless two states start with the same two letters.
Check the sortable table below for a complete list of the official state Postal Codes and abbreviations.
|District of Columbia||D.C.||DC|
|Northern Mariana Islands||MP|
† Nebraska Postal Code was originally "NB". USPS changed Nebraska to "NE" in November 1969.
- Postal Codes
- United States