Barangay San Antonio

Barangay San Antonio forms part of Tomas Oppus, a municipality in Southern Leyte, and is classified as a small barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay San Antonio had a population of 604. This made it the 12th largest of 29 barangays in Tomas Oppus by population, placing it in the middle tier of the municipality. Residents of Barangay San Antonio accounted for approximately 3.56% of the total population of Tomas Oppus, which stood at 16,990 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Antonio moving from 581 residents to 604 residents, an intercensal change of +4.0%. The trajectory indicates a growing community. 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.

Tomas Oppus is a municipality comprising 29 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 Southern Leyte, which contains 500 barangays across its component cities and municipalities, Barangay San Antonio ranks 288th by 2020 population. Southern Leyte is classified as a 3rd by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay San Antonio is governed by an elected Sangguniang Barangay composed of a Punong Barangay and seven kagawads, with the Sangguniang Kabataan representing the youth. The next BSKE, set for Monday, November 2, 2026, will elect officials to four-year terms as provided under Republic Act No. 12232.