The municipality of Actopan is one of the eighty-four municipalities that make up the state of Hidalgo in Mexico. Whose municipal seat is the town of Actopan. It is located at the center of the Hidalgo territory, between the parallels 20°10 'and 20°27' north latitude. The meridians 98°47 'and 99°00' of west longitude, within the geographical region denominated as Mezquital Valley According to INEGI, it has an area of 271.86 km², and represents 1.31% of the surface of the state and occupies the 30th place among the municipalities of Hidalgo by surface.
According to the result of the Intercensal Survey INEGI 2015, the municipality has 56 429 inhabitants which represents 1.97% of the state population, occupies the 10th place among the municipalities of Hidalgo by population, has a population density of 207.6 hab / km² In 2010 the municipality presented an HDI of 0.743, with these data ranked 9th among the municipalities of Hidalgo by IDH. It borders to the north with the municipalities of Santiago de Anaya and Metztitlán. To the east with the municipalities of Metztitlán, Atotonilco el Grande, Mineral del Chico and El Arenal. To the south with the municipalities of El Arenal, San Agustín Tlaxiaca and Ajacuba. To the west with the municipalities of Ajacuba, San Salvador and Santiago de Anaya.