Barangay San Antonio

Situated in City of Sto. Tomas, Batangas, Barangay San Antonio is one of 30 barangays that make up the city within CALABARZON.

According to the 2020 Philippine census, Barangay San Antonio had a population of 16,754. This made it the 5th largest of 30 barangays in City of Sto. Tomas by population, placing it in the upper half of the city. Residents of Barangay San Antonio accounted for approximately 7.67% of the total population of City of Sto. Tomas, which stood at 218,500 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Antonio moving from 11,657 residents to 16,754 residents, an intercensal change of +43.7%. The trajectory indicates a growing community. Barangay San Antonio is officially classified as urban, reflecting the density and built-up character of the area.

City of Sto. Tomas is a city comprising 30 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 10th 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.