The Region of Arica and Parinacota is one of the 16 regions in which the Republic of Chile is divided. Its capital is Arica. Located in the extreme north of the country, it borders Peru to the north, Bolivia to the east, the Tarapacá Region to the south and the Pacific Ocean to the west. With 239 126 rooms. In 2015 it is the third least populated region of the country, ahead of Magallanes and Aysén, the least populated, and with 16 873 km², the fifth least extensive, ahead of Valparaíso, O'Higgins, Metropolitan of Santiago and Ñuble, the less extensive. This region is composed of the provinces of Arica and Parinacota.
It was created on October 8,2007, segregating its territory from the former Region of Tarapacá, when Act 20175 came into force.