900,000 (2000 SIL), increasing. 250,000 monolinguals. Total users in all countries: 1,062,000.
Autonomous Region in Muslim Mindanao: Sulu province, Jolo, in Sulu archipelago; Basilan province, Basilan island; Mimaropa region: Palawan province on Palawan island; Zamboanga Peninsula region: Zamboanga city and environs.
3 (Wider communication). De facto language of provincial identity in Sulu and Tawi-Tawi provinces.