International Comet Quarterly

Standard postal state (USA) and province (Canada) abbreviations

Taken from the official postal websites:

-- CANADA --
AB  Alberta 
BC  British Columbia
MB  Manitoba 
NB  New Brunswick
NF  Newfoundland 
NS  Nova Scotia
NT  Northwest Territories
ON  Ontario 
PE  Prince Edward Island
QC  Quebec
SK  Saskatchewan  
YT  Yukon 

-- UNITED STATES --
AK  ALASKA
AL  ALABAMA
AR  ARKANSAS
AS  AMERICAN SAMOA
AZ  ARIZONA
CA  CALIFORNIA
CO  COLORADO
CT  CONNECTICUT
DC  WASHINGTON, DISTRICT OF COLUMBIA
DE  DELAWARE
FL  FLORIDA
FM  FEDERATED STATES OF MICRONESIA
GA  GEORGIA
GU  GUAM
HI  HAWAII
IA  IOWA
ID  IDAHO
IL  ILLINOIS
IN  INDIANA
KS  KANSAS
KY  KENTUCKY
LA  LOUISIANA
MA  MASSACHUSETTS
MD  MARYLAND
ME  MAINE
MH  MARSHALL ISLANDS
MI  MICHIGAN
MN  MINNESOTA
MO  MISSOURI
MP  NORTHERN MARIANA ISLANDS
MS  MISSISSIPPI
MT  MONTANA
NC  NORTH CAROLINA
ND  NORTH DAKOTA
NE  NEBRASKA
NH  NEW HAMPSHIRE
NJ  NEW JERSEY
NM  NEW MEXICO
NV  NEVADA
NY  NEW YORK
OH  OHIO
OK  OKLAHOMA
OR  OREGON
PA  PENNSYLVANIA
PR  PUERTO RICO
PW  PALAU
RI  RHODE ISLAND
SC  SOUTH CAROLINA
SD  SOUTH DAKOTA
TN  TENNESSEE
TX  TEXAS
UT  UTAH
VA  VIRGINIA
VI  VIRGIN ISLANDS
VT  VERMONT
WA  WASHINGTON
WI  WISCONSIN
WV  WEST VIRGINIA
WY  WYOMING