500 in Bolivia (Crevels 2007). Population total all countries: 730. Ethnic population: 940 (2006 PIB).
Northwestern region; into foothills on Beni and Madre de Dios rivers, Portachuelo Alto, Portachuelo Medio, Portachuelo Bajo. Also in Peru.
Each clan has slight dialect differences; all seem inherently intelligible. Most divergent Tacanan language. Tambopata dialect in Peru somewhat different from the Bolivian dialect.