Barangay San Antonio

Barangay San Antonio forms part of Gandara, a municipality in Samar, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay San Antonio had a population of 573. This made it the 21st largest of 69 barangays in Gandara by population, placing it in the upper half of the municipality. Residents of Barangay San Antonio accounted for approximately 1.63% of the total population of Gandara, which stood at 35,242 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Antonio moving from 755 residents to 573 residents, an intercensal change of -24.1%. The trajectory indicates a contracting 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.

Gandara is a municipality comprising 69 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 Samar, which contains 951 barangays across its component cities and municipalities, Barangay San Antonio ranks 473rd by 2020 population. Samar 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.