Barangay Lambac

Barangay Lambac forms part of Pagsanjan, a municipality in Laguna, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay Lambac had a population of 1,013. This made it the 13th largest of 16 barangays in Pagsanjan by population, placing it among the smaller barangays of the municipality. Residents of Barangay Lambac accounted for approximately 2.29% of the total population of Pagsanjan, which stood at 44,327 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Lambac moving from 936 residents to 1,013 residents, an intercensal change of +8.2%. The trajectory indicates a growing community. Barangay Lambac is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Pagsanjan is a municipality comprising 16 barangays, and serves as the governing unit directly responsible for local services in Barangay Lambac, 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 Lambac ranks 478th 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 Lambac 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.