US STATE ABBREVIATIONS

Gary Gulman is comedian that does a great bit with the very real problem of shortening the states to a two letter abbreviation. It's a postal norm that I still find terribly challenging. 

Here he is on How the States Got Their Abbreviations.

Here is the list to make it clear:

State/District             Postal Code

Alabama                     AL

Alaska                     AK

Arizona                     AZ

Arkansas                     AR

California                    CA

Colorado                     CO

Connecticut                CT

Delaware                    DE

District of Columbia  DC

Florida                    FL

Georgia                    GA

Hawaii                    HI

Idaho                    ID

Illinois                       IL

Indiana                      IN

Iowa             IA

Kansas              KS

Kentucky           KY

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

Territory/Associate Abbreviation Postal Code

American Samoa                 AS

Guam                                 GU

Marshall Islands                 MH

Micronesia                         FM

Northern Mariana Islands MP

Palau                                 PW

Puerto Rico                                 PR

Virgin Islands                         VI

It is notable that in 1967 the abbreviation for Nebraska changed from NB to NE to avoid confusion with New Brunswick!