San Francisco del Rincón is a city and municipality in the western part of the state of Guanajuato, Mexico. The city serves as the municipal seat for the municipality of San Francisco del Rincón. The city lies at the extreme northwest corner of the municipality. The settlement was founded as San Francisco del Tule on January 21, 1607 by a group of families of the Purépecha and Hñähñu ethnicities. It was declared a villa on September 6, 1865 and a city on March 27, 1867.