Barangay San Sebastian

Barangay San Sebastian forms part of City of Lipa, a city in Batangas, and is classified as a mid-sized barangay.

According to the 2020 Philippine census, Barangay San Sebastian had a population of 3,647. This made it the 41st largest of 72 barangays in City of Lipa by population, placing it in the middle tier of the city. Residents of Barangay San Sebastian accounted for approximately 0.98% of the total population of City of Lipa, which stood at 372,931 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Sebastian moving from 4,425 residents to 3,647 residents, an intercensal change of -17.6%. The trajectory indicates a contracting community. Barangay San Sebastian is officially classified as urban, reflecting the density and built-up character of the area.

City of Lipa is a city comprising 72 barangays, and serves as the governing unit directly responsible for local services in Barangay San Sebastian, 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 San Sebastian ranks 212th 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.

The barangay's legislative and executive affairs are handled by a Punong Barangay and the Sangguniang Barangay, elected nationwide during the Barangay and SK Elections. The next BSKE is scheduled for Monday, November 2, 2026, following the synchronized election schedule set by COMELEC Resolution No. 11191.