San Sebastian, officially the Municipality of San Sebastian, is a 6th class municipality in the province of Samar, Philippines. According to the 2…San Sebastian, officially the Municipality of San Sebastian, is a 6th class municipality in the province of Samar, Philippines. According to the 2020 census, it has a population of 8,704 people. San Sebastian was absorbed into the town of Wright during the American occupation. In 1950, the neighborhoods of San Sebastian, Jitaasan, Dolores, Camanjagay, Bontod, Campidasa, Campiyak, Maslog, Balogo, Maropangpang, Binongtoan, and Bolwan were combined and re-established as a single town.