I'm coding a health system which should offer a menu containing the list of mexican states (and DF) in a patients' creation section.
I know there is RENAPO's standard, but it differs from other standards, as you can see in this Wikipedia's article, and I don't know which standard is the best to use.
Which 2-digits abbreviation standard is more used to identify a mexican state as part of an address or a person birthplace?
An ASCII example (Aguascalientes, Baja California, Baja California Sur, Campeche and Chiapas):
+------------+
| Estado [V] |
+------------+
| AS |
| BC |
| BS |
| CC |
| CS |
| ... |
+------------+
(I've been searching the best SE site to post this question. According this question, it is here, so let me know if you have a better suggestion).
EDIT
I found in this Wikipedia page the following comment:
*Mexico's post agency, Correos de México, does not offer an official list. Various competing commercially devised lists exist. The list here reflects choices among them according to these sources.
Even without an official list, I'd like to know what developers would use in the combobox for the users and what abbreviation should be stored in the database. Actually I'm not sure it a 2-digit abbreviation is really used.
EDIT2
I find this list in INEGI website. Is this abbreviation standard the most used by mexican users?
+---------------------------------+---------------+
| State | Abbr. (INEGI) |
+---------------------------------+---------------+
| Aguascalientes | Ags. |
| Baja California | BC |
| Baja California Sur | BCS |
| Campeche | Camp. |
| Coahuila de Zaragoza | Coah. |
| Colima | Col. |
| Chiapas | Chis. |
| Chihuahua | Chih. |
| Ciudad de México | DF |
| Durango | Dgo. |
| Guanajuato | Gto. |
| Guerrero | Gro. |
| Hidalgo | Hgo. |
| Jalisco | Jal. |
| México | Mex. |
| Michoacán de Ocampo | Mich. |
| Morelos | Mor. |
| Nayarit | Nay. |
| Nuevo León | NL |
| Oaxaca | Oax. |
| Puebla | Pue. |
| Querétaro | Qro. |
| Quintana Roo | Q. Roo |
| San Luis Potosí | SLP |
| Sinaloa | Sin. |
| Sonora | Son. |
| Tabasco | Tab. |
| Tamaulipas | Tamps. |
| Tlaxcala | Tlax. |
| Veracruz de Ignacio de la Llave | Ver. |
| Yucatán | Yuc. |
| Zacatecas | Zac. |
+---------------------------------+---------------+