 In 1854, the communities under its jurisdiction were San Pedro Techuchulco, San Mateo Texcalyacac, Santa Cruz Atizapán and the Rancho de Almoloya.However, its territory was reduced in 1866 when the municipality of Texcalyacac was erected and again in 1870 when Santa Cruz Atizapán separated.The area has a rainy season from April to October and a dry season from November to March with a total annual rainfall of 871.7 mm.