Chalco de Díaz Covarrubias is a city that is municipal seat of the surrounding municipality of Chalco. It lies in the eastern part of the State of Mexico just east of the Federal District of Mexico and is considered part of the Mexico City metropolitan area. Chalco name is Nahuatl, and comes from Chalchihuitl "green stone, jade", and Co: "place" therefore both words together mean "the place of jade".