Hernán Cortés entrusted the town of Cuautitlán to Alonso de Ávila and this, to his brother Gil González Dávila.

[12] To keep the workers close to the various factories that flourished in the city, especially in the town of La Aurora, 225 adobe or tepetate houses were built around the facilities known as rancherías.

[13] On July 31, 1971, the then President of the Republic, Luis Echeverría Álvarez, laid the first stone of the city, located next to what is now the Parque de las Esculturas.

Like many other projects of the time, one of the objectives of building this city was the regulation of population growth and the reduction of congestion in the metropolitan area.

[16] On May 1, 1972, President Luis Echeverría, together with the then Governor of the State of Mexico Carlos Hank González, made the symbolic delivery of 225 houses, and also began to operate the first office of telegraphs of Cuautitlán Izcalli; but it was not until August 21 of the same year, when the keys to the first 227 houses were handed over to normal school teachers from the entity and the first “Conasuper” shopping center was inaugurated in the vicinity of Plaza Isidro Fabela, in Cumbria.

[17] Decree Number 71 of the H. XLV Legislature of the State of Mexico, signed on June 22, 1973,[18] stipulates that the official name of municipality number 121 of the State of Mexico is Cuautitlán Izcalli:[19] "Se crea el Municipio de Cuautitlán Izcalli, México, y se delimita la poligonal que con base en los puntos de referencia en el mencionado decreto vertidos sirven de límites a este municipio."

[18]Once the official designation of the city was finalized, the first political administration of the municipality was headed by the lawyer Gabriel Marcelino Ezeta Moll, who began his activities with a limited budget that amounted to 3 million 103 thousand 166 pesos until the end of 1973.

[17] Serving in the role of ruler from 1973 to 1976,[20] the first seats of government were established first in the "Calmecac" secondary school in Cumbria, then in four houses on Jocotitlán street, later in some offices installed in the upper part of a sub-commercial center located on Jilotzingo street, and Finally, it was not until 1976 that a government building was established that began to function as the municipal presidency.

The headquarters was inaugurated by Luis Cuauhtémoc Riojas Guajardo, who was elected as the second municipal president of Izcalli after the end of the term of governance of Gabriel Marcelino.

[10] The authorities of Cuautitlán Izcalli, in coordination with the government of the State of Mexico, built the James Watt bridge, which increased by 75 percent the capacity of vehicles at the entrance of the Mexico-Cuautitlán highway.

[48] The principal water currents in Izcalli are the río Cuautitlán, which crosses an approximate extension of 40 km of the municipal territory, and the Hondo de Tepotzotlán River.

[49] The dam is the second most important body of water in the Valley of Mexico, and is supplied by the Cuautitlán, Xinte and San Pedro rivers.