Ascensión is one of the 67 municipalities of Chihuahua, in northern Mexico. The city of Ascensión, Chihuahua, is the municipal seat. Th…Ascensión is one of the 67 municipalities of Chihuahua, in northern Mexico. The city of Ascensión, Chihuahua, is the municipal seat. The municipality covers an area of 11,000.1 km. As of 2010, the municipality had a total population of 23,975.