Barangay Santa Anastacia

Situated in City of Sto. Tomas, Batangas, Barangay Santa Anastacia is one of 30 barangays that make up the city within CALABARZON.

According to the 2020 Philippine census, Barangay Santa Anastacia had a population of 19,442. This made it the 2nd largest of 30 barangays in City of Sto. Tomas by population, placing it among the most populous barangays of the city. Residents of Barangay Santa Anastacia accounted for approximately 8.90% 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 Santa Anastacia changed from 14,666 to 19,442, a shift of +32.6% over the five-year period. This places the barangay among those with growing populations in City of Sto. Tomas. Barangay Santa Anastacia 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 Santa Anastacia, 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 Santa Anastacia ranks 5th 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 Santa Anastacia 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.