Ojo de Agua, Tecámac

It is located in the northeastern part of the state, northeast of Mexico City and within the Greater Mexico City urban area.

It had a 2010 census population of 242,272 inhabitants, or 66.45 percent of its municipality's total of 364,579.

Ojo de Agua is the largest locality in Mexico that is not a municipal seat.

(The municipal seat lies in the town of Tecámac de Felipe Villanueva, with a population of 15,911 inhabitants.)

Ojo de Agua lies at an elevation of 2,248 m (7,375 ft.) above sea level.