L1 users: 1,080 (2012 UNSD), increasing. Many monolinguals. Ethnic population: 1,500. Total users in all countries: 2,580.
Napo province: near Santa Rosa de Sucumbíos, and down Aguarico river 130 km; Sucumbíos province; 5 main centers in Colombia and Ecuador border areas.
Vigorous. Some Siona and Secoya have learned Cofán due to intermarriage, and their children learn Cofán. All domains. All ages. Positive attitudes. Also use Napo Quichua [qvo], Secoya [sey], Siona [snn]. Also use Spanish [spa], which is the language of instruction in school, except for early grades which provide bilingual education.
Latin script [Latn].
Variously classified as Chibchan with Western Tucanoan features (Ferndon, Borman), Barbacoan (J. Mason), or - erroneously - as Jivaroan (Ruhlen 1987). Some Witotoan influences. Traditional religion, Christian.