Valle de Chalco

Valle de Chalco Solidaridad
Municipality
Location of Valle de Chalco Solidaridad in the State of Mexico
Coordinates: 19°17′30″N 98°56′20″W / 19.29167°N 98.93889°W / 19.29167; -98.93889
Country	Mexico
State	State of Mexico
Region	Amecameca
Metro area	Greater Mexico City
Municipal Status	November 9, 1994[1]
Municipal Seat	Xico
Government
• Type	Ayuntamiento
• Municipal President	Armando García Méndez (2022-2024)
Area
• Land	46.53 km2 (17.97 sq mi)
• Water	2.76 km2 (1.07 sq mi)
Elevation (of seat)	2,240 m (7,350 ft)
Population  (2010)
• Municipality	357,645
Time zone	UTC-6 (CST)
• Summer (DST)	UTC-5 (CDT)
Postal code (of seat)	56610
Area code	55
Demonym	Vallechalquense
Website	Official website (in Spanish)

Valle de Chalco, officially named Valle de Chalco Solidaridad, is a municipality located in the State of Mexico, Mexico, on the eastern outskirts of the metropolitan area of Mexico City. Formerly part of the municipality of Chalco, it was split off as a separate entity in 1994, during the presidency of Salinas de Gortari, under his Programa Nacional de Solidaridad (National Solidarity Program). The municipality lies on the old bed of Lake Chalco, which was substantially drained in the nineteenth century. Technically, the municipal seat is Xico, after a high point of land that once formed an island, and now remains as a small hill within an otherwise monotonous, urban expanse. "Chalco" refers to the Chalca tribe, whose territory covered the area around the lake, prior to the Spanish conquest of the Aztec Empire.

As of 2006, Chalco included part of the world's largest mega-slum, along with Ciudad Nezahualcoyotl and Ixtapaluca.^[2]