Barangay San Antonio

Classified as a mid-sized barangay, Barangay San Antonio is one of the administrative divisions of Milaor in Camarines Sur, Bicol Region, Philippines.

According to the 2020 Philippine census, Barangay San Antonio had a population of 3,941. This made it the 1st largest of 20 barangays in Milaor by population, placing it among the most populous barangays of the municipality. Residents of Barangay San Antonio accounted for approximately 11.60% of the total population of Milaor, which stood at 33,963 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Antonio moving from 3,372 residents to 3,941 residents, an intercensal change of +16.9%. 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.

Milaor is a municipality comprising 20 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 94th 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.

Like every Philippine barangay, Barangay San Antonio is led by an elected Punong Barangay (barangay captain) supported by seven Sangguniang Barangay members (kagawads), an SK Chairperson, a Barangay Secretary, and a Barangay Treasurer. The next Barangay and Sangguniang Kabataan Elections (BSKE) are scheduled for Monday, November 2, 2026, with officials serving four-year terms under Republic Act No. 12232.