Barangay San Antonio

Barangay San Antonio is a small barangay in the municipality of Tinambac, located in the province of Camarines Sur, in the Bicol Region region of the Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay San Antonio had a population of 1,211. This made it the 23rd largest of 44 barangays in Tinambac by population, placing it in the middle tier of the municipality. Residents of Barangay San Antonio accounted for approximately 1.73% of the total population of Tinambac, which stood at 70,176 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Antonio moving from 1,217 residents to 1,211 residents, an intercensal change of -0.5%. The trajectory indicates a broadly stable community. The Philippine Statistics Authority classifies Barangay San Antonio as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Tinambac is a municipality comprising 44 barangays, and serves as the governing unit directly responsible for local services in Barangay San Antonio, including public health, sanitation, peace and order, and civil registration. Within the wider province of Camarines Sur, which contains 1,063 barangays across its component cities and municipalities, Barangay San Antonio ranks 634th by 2020 population. Camarines Sur is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay San Antonio 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.