Piedras Negras, Coahuila is a city located along the Mexico-USA border. Piedras Negras is on the northeastern border of the Mexico state of Coahuila and is across from the U.S. city of Eagle Pass, Texas.

Transportation is the primary commerce in this city with products moving to and from the USA and Mexico while passing through the cities of Monclova and Saltillo.

Piedras Negras and the surrounding community have nearly 200,000 residents. The Piedras Negras Phone Book contains both Yellow Pages and White Pages. The directory lists only a few additional cities.