Río Negro (Spanish pronunciation: [ˈri.o ˈneɣɾo], English: Black River) is a Chilean city and commune in Osorno Province, Los Lagos Region. The city is located 38 km south of Osorno and 6 km west of Route 5. It has an area of 1,266 km² and a population of 14,732 inhabitants (7,204 women and 7,528 men according to census 2002).The commune is bordered on the north by Osorno and San Juan de la Costa, on the east by Puerto Octay, on the west by the Pacific Ocean, and on the south by Purranque.