The municipality of Santiago Tulantepec de Lugo Guerrero is one of the eighty-four municipalities that make up the state of Hidalgo in Mexico. Whose municipal head is the locality of Santiago Tulantepec. The municipality is located to the east of the Hidalgo territory between the parallels 19°59 'and 20°05' of north latitude. The meridians 98°20 'and 98°29' west longitude. With an altitude between 2200 and 2700 meters above sea level, this municipality has an area of 64.29 km2, and represents 0.31% of the surface of the state, within the geographical region known as Valle de Tulancingo. It adjoins to the north with the municipality of Tulancingo de Bravo. To the east with the municipality of Cuautepec de Hinojosa.
To the south with the municipalities of Cuautepec de Hinojosa and Singuilucan. To the west with the municipalities of Singuilucan and Tulancingo de Bravo. Santiago Tulantepec de Lugo Guerrero is considered within the metropolitan municipalities of the metropolitan area of Tulancingo, also integrated by the municipalities of Cuautepec de Hinojosa and Tulancingo de Bravo, being Tulancingo de Bravo the central municipality.