Teoloyucan Municipality

Teoloyucan is a municipality located in the State of Mexico, Mexico. Its municipal seat and second largest city is the city of Teoloyucan. It lies 45 km (28 mi) north of the Federal District (Distrito Federal) in the northeastern part of the state of México, and is part of the Greater Mexico City urban area. During the colonial period the area's name had a number of variations, including Teohuilloyocan, Teohuilloyucan, Theoloyucan, Teoloyucan Coaquileque and Tehuilloyocan. The name comes from Nahuatl meaning place of glass or place of crystal rock.

==The city== thumb|right|Treaty of Teoloyucan According to the Codex Mendoza, the settlement is mentioned as Itzcoatl conquered this area, meaning it existed prior to 1436, probably owing its importance to its proximity to Cuautitlán. After the Spanish Conquest, in 1565, the area and its people were entrusted to Alonso de Ávila Alvarado. The Franciscans came a year later to evangelize. In 1570, the town was described as having four principal districts divided into 8 neighborhoods each, indicating the area was already well-organized with a population of over 1,000 people, half of whom were Mexica and the other half Otomi. The population of the city as of 2010 was 63,115.