Apaseo el Alto is a Mexican city and municipality located in the state of Guanajuato. The municipality has an area of 491.81 square kilometres and is bordered to the north by Apaseo el Grande, to the east by the state of Querétaro, to the south by Jerécuaro and Tarimoro, and to the northwest by Celaya. The municipality had a population of 56,817 inhabitants according to the 2005 census.