Barangay Santo Tomas

Barangay Santo Tomas is a small barangay in the municipality of Abulug, located in the province of Cagayan, in the Cagayan Valley region of the Philippines.

According to the 2020 Philippine census, Barangay Santo Tomas had a population of 1,091. This made it the 14th largest of 20 barangays in Abulug by population, placing it in the middle tier of the municipality. Residents of Barangay Santo Tomas accounted for approximately 3.16% of the total population of Abulug, which stood at 34,579 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Santo Tomas moving from 1,027 residents to 1,091 residents, an intercensal change of +6.2%. The trajectory indicates a growing community. Barangay Santo Tomas is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Abulug is a municipality comprising 20 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 Cagayan, which contains 820 barangays across its component cities and municipalities, Barangay Santo Tomas ranks 469th by 2020 population. Cagayan 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.