Mexican Province Codes,
"The TransBorder Freight Dataset uses an assigned code to represent Mexican states, as shown below. These do not correspond to state mail codes used by the Mexican government. In addition, these codes are available at http://www.bts.gov/ntda/tbscd/mex-states.html",
"Customers should also note that until May 1998, Baja California Norte was listed as a Mexican state due to an error in geographic identification. The actual Mexican state is Baja California. For the period April 1994 to May 1998, the total amount of trade for this state would be the sum of the Baja California Norte and Baja California categories. Beginning in June 1998 and subsequently, the correct state is listed as Baja California",

State,Code
Aguascalientes ,AG
Baja California ,BC
Baja California Norte,BN
Baja California Sur,BS
Chihuahua ,CH
Colima,CL
Campeche ,CM
Coahuila,CO
Chiapas ,CS
Distrito Federal,DF
Durango ,DG
Guerrero,GR
Guanajuato,GT
Hidalgo ,HG
Jalisco,JA
Michoacan,MI
Morelos,MO
Estado de Mexico,MX
Nayarit,NA
Nuevo Leon,NL
Oaxaca ,OA
Puebla ,PU
Quintana Roo,QR
Queretaro ,QT
Sinaloa,SI
San Luis Potosi ,SL
Sonora ,SO
Tabasco ,TB
Tlaxcala,TL
Tamaulipas,TM
Veracruz ,VE
Yucatan ,YU
Zacatecas,ZA
State Unknown,OT