Barangay Santo Tomas

Classified as a small barangay, Barangay Santo Tomas is one of the administrative divisions of Mabini in Batangas, CALABARZON, Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Santo Tomas had a population of 1,206. This made it the 20th largest of 34 barangays in Mabini by population, placing it in the middle tier of the municipality. Residents of Barangay Santo Tomas accounted for approximately 2.37% of the total population of Mabini, which stood at 50,858 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Santo Tomas moving from 1,210 residents to 1,206 residents, an intercensal change of -0.3%. The trajectory indicates a broadly stable community. The Philippine Statistics Authority classifies Barangay Santo Tomas as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Mabini is a municipality comprising 34 barangays, and serves as the governing unit directly responsible for local services in Barangay Santo Tomas, 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 Santo Tomas ranks 800th 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.

Barangay Santo Tomas 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.