L1 users: 350,000 (2000 census), increasing.
Sulawesi Tengah province: south Donggala, Morowali, south Parigi Moutong, Poso, Sigi, and Tojo Una-Una regencies, Kota Palu city; Una-Una island in Togian chain, coastal groups near Malai, Puna, and Tomori bay head.
3 (Wider communication). Ledo is lingua franca in West Toraja area.
Ledo (Palu), Doi (Kayu Malue, Mamboro), Ado (Pakuli, Sibalaya), Edo (Sidondo), Tado (Ri Io, To ri Io, Torio, Toriu), Tara (Parigi), Rai (Sindue-Tawaili, Tawaili-Sindue), Raio (Kori), Ija (Sigi), Taa (Palolo), Ta’a (Dolago-Sausu, Sausu). Doi dialect is intelligible of Ledo and Edo; Ado next most intelligible; Tado a little less. Some intelligibility of Da’a [kzf], but major sociolinguistic differences. Lexical similarity: 80%–88% between Ledo and the Ado, Edo, Doi, and Lindu dialects.
Largest and most prestigious of Kaili varieties in Sulawesi. Used as L2 by Uma [ppk].
Latin script [Latn].
Tado dialect different from Tado [klw]. Muslim, Christian.