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 MéXico, just east of the Federal District of Mexico and is considered part of the Mexico City metropolitan area.
Its church was constructed in 1585, after being evangelized by the Franciscans and has been considered a city since 1861. The city had a 2010 census population of 168,720 inhabitants. It is an important center for dairy production as well as the manufacturing of thread and yarn of wool and cotton. A major employer is the San Rafael paper factory. Government sources mention that the helicopter where Francisco Blake Mora traveled collided in this municipality, leaving 8 top government officials dead.