Barangay San Guillermo

Classified as a small barangay, Barangay San Guillermo is one of the administrative divisions of Talisay in Batangas, CALABARZON, Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay San Guillermo had a population of 1,171. This made it the 14th largest of 21 barangays in Talisay by population, placing it in the middle tier of the municipality. Residents of Barangay San Guillermo accounted for approximately 2.53% of the total population of Talisay, which stood at 46,238 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Guillermo moving from 1,066 residents to 1,171 residents, an intercensal change of +9.8%. The trajectory indicates a growing community. The Philippine Statistics Authority classifies Barangay San Guillermo as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Talisay is a municipality comprising 21 barangays, and serves as the governing unit directly responsible for local services in Barangay San Guillermo, 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 Guillermo ranks 815th 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.