Tepetitlán is a town and one of the 84 municipalities of Hidalgo, in central-eastern Mexico. The municipality covers an area of 180 km². As of 20…Tepetitlán is a town and one of the 84 municipalities of Hidalgo, in central-eastern Mexico. The municipality covers an area of 180 km². As of 2005, the municipality had a total population of 8,893.