La Quiaca is a small city in the north of the province of Jujuy, Argentina, on the southern bank of the La Quiaca River, opposite the town of Villazón, Bolivia. It lies at the end of National Route 9, 289 km from San Salvador de Jujuy (the provincial capital), and at an altitude of 3,442 m above mean sea level. La Quiaca has 14,751 inhabitants as per the 2001 census .