Where is Piedras Negras Located? by nextbyte 147 A city on the Mexico-United States border. Located in the state of Coahuila. Recognized for its cross-border trade, historical sites, and as an industrial center. Advertisement Map showing where is Piedras Negras located in Mexico. Where is city: Related Maps Where is North America, Where is Mexico In other languages Mapa de Norte America, Mapa de Mexico, Carte Amérique du Nord, Carte du Mexique, América do Norte Mapa, خريطة أمريكا الشمالية Continent Map of North America Country Map of Mexico Airport Piedras Negras Airport Share FacebookTwitterPinterestEmail