Barangay San Antonio

Classified as a small barangay, Barangay San Antonio is one of the administrative divisions of Capalonga in Camarines Norte, Bicol Region, Philippines.

According to the 2020 Philippine census, Barangay San Antonio had a population of 920. This made it the 15th largest of 22 barangays in Capalonga by population, placing it in the middle tier of the municipality. Residents of Barangay San Antonio accounted for approximately 2.54% of the total population of Capalonga, which stood at 36,223 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Antonio moving from 591 residents to 920 residents, an intercensal change of +55.7%. 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.

Capalonga is a municipality comprising 22 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 Norte, which contains 282 barangays across its component cities and municipalities, Barangay San Antonio ranks 224th by 2020 population. Camarines Norte is classified as a 2nd 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.