It is responsible for the suffragan dioceses of Tapachula and Las Casas.

Pope Benedict XVI elevated it to the level of archdiocese on 25 November 2006.

[1] In 2013, Pope Francis approved translations of the prayers for Mass and the celebration of sacraments into Tzotzil and Tzeltal.

The translations include "the prayers used for Mass, marriage, baptisms, confirmations, confessions, ordinations and the anointing of the sick Bishop Arizmendi said Oct. 6 that the texts, which took approximately eight years to translate, would be used in his diocese and the neighboring Archdiocese of Tuxtla.

Mass has been celebrated in the diocese in recent years with the assistance of translators—except during homilies—Bishop Arizmendi said in an article in the newspaper La Jornada.