Ojinaga is a toun an seat o the municipality o Ojinaga, in the northren Mexican state o Chihuahua. As o 2010, the toun haed a tot population o 22,744. It is a landwart bordertoun on the U.S.-Mexico border, wi the ceety o Presidio, Texas, directly opposite, on the U.S. side o the border. Ojinaga is situatit whaur the Río Conchos drains intae the Río Bravo del Norte, an aurie cried La Junta de los Rios. Presidio an Ojinaga are connectit bi the Presidio-Ojinaga International Bridge.