The municipality of Calnali is one of the eighty-four municipalities that make up the state of Hidalgo, Mexico. Whose municipal seat is the town of Calnali. Calnali is located north of the Hidalgo territory between the parallels 20°50 'and 20°59' north latitude. The meridians 98°25 'and 98°41' of west longitude. With an altitude between 200 and 1800 meters above sea level, this municipality has an area of 211.01 km2, and represents 1.01% of the state's surface, within the geographical region known as the Sierra Alta. It borders to the north with the municipalities of Tlanchinol, Huazalingo and Yahulica. To the east with the municipality of Yahualica. To the south with the municipalities of Tianguistengo and Xochicoatlán.
To the west with the municipalities of Lolotla and Tlanchinol.