San Jacinto, officially the Municipality of San Jacinto, is a municipality in the province of Masbate, Philippines. According to the 2020 census, i…San Jacinto, officially the Municipality of San Jacinto, is a municipality in the province of Masbate, Philippines. According to the 2020 census, it has a population of 29,686 people.. San Jacinto is the commercial capital of Ticao Island.