Tabuan-Lasa, officially the Municipality of Tabuan-Lasa, is a municipality in the province of Basilan, Philippines. According to the 2020 census, it …Tabuan-Lasa, officially the Municipality of Tabuan-Lasa, is a municipality in the province of Basilan, Philippines. According to the 2020 census, it has a population of 29,327 people. Tabuan-Lasa was created out of the 12 barangays of Sumisip that were not on Basilan Island, through Muslim Mindanao Autonomy Act No. 187, which was subsequently ratified in a plebiscite held on March 29, 2008.