Zumpango del Río is the seat of the municipality of Eduardo Neri, in the southern Mexican state of Guerrero.

Using Indian slave labor until the ban from doing so was enforced in 1550, the mines produced 1000 pounds of silver by 1539.

Prominent mine owners included Juan de Burgos and Hernán Cortés.

[1] The city is located in the Sierra Madre del Sur mountains, at an altitude of 1,092 meters (3,583 feet).

It is on Mexican Federal Highway 95 (Mexico City-Acapulco Highway), about 8 miles (13 km) northeast of the Guerrero state capital city of Chilpancingo[2]