Barangay Santiago

Barangay Santiago forms part of City of Sto. Tomas, a city in Batangas, and is classified as a large barangay.

According to the 2020 Philippine census, Barangay Santiago had a population of 7,542. This made it the 10th largest of 30 barangays in City of Sto. Tomas by population, placing it in the middle tier of the city. Residents of Barangay Santiago accounted for approximately 3.45% of the total population of City of Sto. Tomas, which stood at 218,500 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Santiago changed from 5,978 to 7,542, a shift of +26.2% over the five-year period. This places the barangay among those with growing populations in City of Sto. Tomas. Barangay Santiago 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 Santiago, 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 Santiago ranks 51st 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 Santiago 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.