Atotonilco de Tula is one of the 84 municipalities of Hidalgo. It is located in the central-southeastern part of the state of Hidalgo in Mexico. The municipal seat is Atotonilco de Tula. The municipality is located at a southern pass leading out of the Mezquital Valley to 86 kilometers north of Mexico City and about 180 km northeast of the state capital of Pachuca de Soto. The name comes from Nahuatl and means "place of hot springs" and otomi language is Padehe. The municipality covers an area of 31 km².