List of United States Postal Codes and State Abbreviations

Created: December 17, 2015 Last Modified: January 11, 2016

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.

State Abbreviation Postal Code
AlabamaAla.AL
AlaskaAlaskaAK
American Samoa AS
ArizonaAriz.AZ
ArkansasArk.AR
CaliforniaCalif.CA
ColoradoColo.CO
ConnecticutConn.CT
DelawareDel.DE
District of ColumbiaD.C.DC
FloridaFla.FL
GeorgiaGa.GA
GuamGuamGU
HawaiiHawaiiHI
IdahoIdahoID
IllinoisIll.IL
IndianaInd.IN
IowaIowaIA
KansasKans.KS
KentuckyKy.KY
LouisianaLa.LA
MaineMaineME
MarylandMd.MD
Marshall Islands MH
MassachusettsMass.MA
MichiganMich.MI
Micronesia FM
MinnesotaMinn.MN
MississippiMiss.MS
MissouriMo.MO
MontanaMont.MT
NebraskaNebr.NE
NevadaNev.NV
New HampshireN.H.NH
New JerseyN.J.NJ
New MexicoN.M.NM
New YorkN.Y.NY
North CarolinaN.C.NC
North DakotaN.D.ND
Northern Mariana Islands MP
OhioOhioOH
OklahomaOkla.OK
OregonOre.OR
Palau PW
PennsylvaniaPa.PA
Puerto RicoP.R.PR
Rhode IslandR.I.RI
South CarolinaS.C.SC
South DakotaS.D.SD
TennesseeTenn.TN
TexasTex.TX
UtahUtahUT
VermontVt.VT
VirginiaVa.VA
Virgin IslandsV.I.VI
WashingtonWash.WA
West VirginiaW.Va.WV
WisconsinWis.WI
WyomingWyo.WY

Nebraska Postal Code was originally "NB". USPS changed Nebraska to "NE" in November 1969.


** This Document Provided By States101.com **
Source: https://www.states101.com/articles/postal-codes