1,800 (2001 SIL). 10 monolinguals. Ethnic population: 1,800.
Amazonas Department, Puerto Santander municipality, 3 enclaves; Mirití-Paraná, La Pedrera on lower Caquetá, Ararcuara, Leticia; part of westernmost enclave in Caqueta Department.
None known. In some traditional ceremonies ritual language used, mostly unintelligible even to those who have learned it.
Latin script [Latn].
Local subversive activity caused some Yucuna to move to other areas. Traditional religion, Christian.