Actopan is one of the 84 municipalities of Hidalgo, in central-eastern Mexico, whose municipal seat and most populated locality is Actopan. This municipality covers an area of 280.1 km2. It is crossed by the federal road that runs from Mexico City to Nuevo Laredo and it is located 30 km northwest of Pachuca, the capital city of the state of Hidalgo.

Hidalgo is a state in central Mexico divided into 84 municipalities. According to the 2020 Mexican census, Hidalgo is the 16th most populous state with 3,082,841 inhabitants and the 26th largest by land area spanning 20,813 square kilometres (8,036 sq mi).