Barangay San Antonio

Classified as a small barangay, Barangay San Antonio is one of the administrative divisions of San Luis in Batangas, CALABARZON, Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay San Antonio had a population of 706. This made it the 22nd largest of 26 barangays in San Luis by population, placing it among the smaller barangays of the municipality. Residents of Barangay San Antonio accounted for approximately 1.95% of the total population of San Luis, which stood at 36,172 in the same census year.

The barangay recorded 656 residents in the 2015 intercensal count and 706 residents in the 2020 Census — a net change of +7.6%, consistent with a growing settlement. 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.

San Luis is a municipality comprising 26 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 Batangas, which contains 1,078 barangays across its component cities and municipalities, Barangay San Antonio ranks 972nd by 2020 population. Batangas 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.