L1 users: 1,500 (Mead 2001). 1,100 in Lembanato and 400 in Tumbulawa.
Sulawesi Tengah province: Batu Daka island, Tumbulawa village on northwest coast; Togian islands, Lembanato village on Kilat bay, north side of Togian island.
Bobongko is not derogatory to its speakers, but it is to the Andio [bzb]. Muslim, Christian.