North coastal jungle, Esmeraldas Province, Cayapas river and tributaries (Onzole, Canandé, Sucio, Cojimíes, and others).
Elders and preschool-aged children are mostly monolingual (2007). Women, older adults, and those living in the isolated headwaters of the river are less bilingual in Spanish [spa].
Ethnonym: Chachi (sg.), Chachilla (pl.). Traditional religion, Christian.