The Tacna Province was a territorial division of Chile that existed between 1884 and 1929, was created on 31 October 1884, on the basis of the provinces of Tacna and Arica of the Tacna Department. It covered from the to the north, to the Quebrada de Camarones to the south, and from the Andes mountain range to Pacific Ocean. This was under the conditions of Treaty of Ancón, by means of which Chile achieved dominion over the Tarapacá Department, and possession of the provinces of Tacna and Arica for a decade, after which a plebiscite was to be held to determine the region's sovereignty, however there were some problems to carry out the plebiscite. The provisional legal organization will end up working for 50 years until 1929.