US, USA the whole country
AA, Armed Forces the Americas
AE, Armed Forces Europe
AL, Alabama
AK, Alaska
AP, Armed Forces Pacific
AR, Arkansas
AS, American Samoa
AZ, Arizona
CA, California
CO, Colorado
CT, Connecticut
DC, District of Columbia
DE, Delaware
FL, Florida
FM, Fed. 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
MS, Mississippi
MT, Montana
NC, North Carolina
ND, North Dakota
NE, Nebraska
NH, New Hampshire
NJ, New Jersey
NM, New Mexico
NN, North Mariana Islands
MP, North Mariana Islands
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