Barangay San Antonio

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

According to the 2020 Philippine census, Barangay San Antonio had a population of 1,920. This made it the 21st largest of 38 barangays in Buhi by population, placing it in the middle tier of the municipality. Residents of Barangay San Antonio accounted for approximately 2.36% of the total population of Buhi, which stood at 81,306 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Antonio moving from 1,790 residents to 1,920 residents, an intercensal change of +7.3%. The trajectory indicates a growing community. Barangay San Antonio is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Buhi is a municipality comprising 38 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 371st 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.

The barangay's legislative and executive affairs are handled by a Punong Barangay and the Sangguniang Barangay, elected nationwide during the Barangay and SK Elections. The next BSKE is scheduled for Monday, November 2, 2026, following the synchronized election schedule set by COMELEC Resolution No. 11191.