Prior to 2019, the archdiocese was the largest in the world, with nearly 8 million Catholics. In September 2019, Pope Francis approved the division of the archdiocese, erecting three new suffragan dioceses from its territory: Azcapotzalco, Iztapalapa, and Xochimilco.[3] These are the only three suffragans within the ecclesiastical province of which the archdiocese is the metropolitan see. Today, the archdiocese's territory comprises most of Mexico City, with the exception of the three new dioceses, each of which is coextensive with its eponymous borough.
Salvador González Morales (appointed 16 February 2019)
Carlos Enrique Samaniego López (appointed 16 February 2019)
Luis Manuel Pérez Raygoza (appointed 25 January 2020)
Héctor Mario Pérez Villarreal (appointed 25 January 2020)
Former auxiliary bishops
Juan Manuel de Irrizarri y Peralta (27 April 1840 – 27 March 1849)
Maximino Ruiz y Flores (8 March 1920 – 11 May 1949)
Francisco Orozco Lomelín (19 March 1952 – 17 October 1990)
José Villalón Mercado (1 April 1952 – 12 September 1977)
Alfredo Torres Romero (30 December 1967 – 4 January 1975), appointed Coadjutor Bishop of Aguascalientes
Luis Mena Arroyo (13 July 1961 – 1 September 1964), appointed Coadjutor Archbishop of Chihuahua; returned here as Auxiliary Bishop (27 July 1979 – 9 September 1995), with personal title of Archbishop
Jorge Martínez Martínez (5 June 1971 – 1 August 1994)
Javier Lozano Barragán (5 June 1979 – 28 October 1984), appointed Bishop of Zacatecas; future Cardinal