Barangay San Isidro

Classified as a very small barangay, Barangay San Isidro is one of the administrative divisions of Liliw in Laguna, CALABARZON, Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay San Isidro had a population of 489. This made it the 23rd largest of 33 barangays in Liliw by population, placing it in the middle tier of the municipality. Residents of Barangay San Isidro accounted for approximately 1.24% of the total population of Liliw, which stood at 39,491 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Isidro moving from 407 residents to 489 residents, an intercensal change of +20.1%. The trajectory indicates a growing community. The Philippine Statistics Authority classifies Barangay San Isidro as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Liliw is a municipality comprising 33 barangays, and serves as the governing unit directly responsible for local services in Barangay San Isidro, including public health, sanitation, peace and order, and civil registration. Within the wider province of Laguna, which contains 681 barangays across its component cities and municipalities, Barangay San Isidro ranks 578th by 2020 population. Laguna is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay San Isidro 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.