Barangay Interior

Classified as a small barangay, Barangay Interior is one of the administrative divisions of San Jacinto in Masbate, Bicol Region, Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Interior had a population of 601. This made it the 18th largest of 21 barangays in San Jacinto by population, placing it among the smaller barangays of the municipality. Residents of Barangay Interior accounted for approximately 2.02% of the total population of San Jacinto, which stood at 29,686 in the same census year.

The barangay recorded 716 residents in the 2015 intercensal count and 601 residents in the 2020 Census — a net change of -16.1%, consistent with a contracting settlement. The Philippine Statistics Authority classifies Barangay Interior as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

San Jacinto is a municipality comprising 21 barangays, and serves as the governing unit directly responsible for local services in Barangay Interior, including public health, sanitation, peace and order, and civil registration. Within the wider province of Masbate, which contains 550 barangays across its component cities and municipalities, Barangay Interior ranks 488th by 2020 population. Masbate is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay Interior is governed by an elected Sangguniang Barangay composed of a Punong Barangay and seven kagawads, with the Sangguniang Kabataan representing the youth. The next BSKE, set for Monday, November 2, 2026, will elect officials to four-year terms as provided under Republic Act No. 12232.