San Ignacio Cerro Gordo is a municipality of the High South Region, in the state of Jalisco, Mexico. At the same time, it is part of the Bajío macro-region. Likewise, it is part of the Metropolitan Area of Tepatitlán de Morelos. San Ignacio was constituted as the 125th municipality of the state of Jalisco on January 1,2007, after the Jalisco State Congress approved that it be constituted as such because it meets the requirements established by the constitution of Jalisco. The first inhabitants of Cerro Gordo were Otomi, but they were designated as bapames, pines, otomatlatolin, amultecas, coras, cocas, tepehuanos, huicholes, tecos, tecuexes, tecuanes, tecumalmes, and tecoximes. These tribes came from the Central Table.
His pilgrimage went to the courses of Teocaltiche, Tepatitlán and Arandas, counting on the mountain protection and even more was an obligatory step to his route. That tribe inhabited the legendary Cerro Gordo, now known as Picacho, San Miguel el Alto or Atoyanalco, Jalostotitlán, Tepatitlán and more towns in eastern Jalisco. In the first book of baptisms mention is made as founders of those lands, pure Spaniards, Indians and mulattoes, as well as the following ranches: El Buey, Teposán, El Ciego, La Soledad, La Tuna, Boca de Leones, Ramblas, Santa Rosa, Jaquetas, El Pueblito, Santa María, El Carrizal, Las Hormigas, Tule, Atotonilquillo, Teocaltitlán, San José de Cerro Gordo, San Antonio de la Cruz, Las Semillas, Zacamecate. As belonging to the Hacienda de Cerro Gordo or the Trasquila.
The name of the municipality is owed to San Ignacio de Loyola, so this town is also known as San Ignacio Cerro Gordo de Loyola.