Barangay San Juan

Barangay San Juan forms part of Luisiana, a municipality in Laguna, and is classified as a very small barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay San Juan had a population of 349. This made it the 17th largest of 23 barangays in Luisiana by population, placing it in the middle tier of the municipality. Residents of Barangay San Juan accounted for approximately 1.67% of the total population of Luisiana, which stood at 20,859 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Juan moving from 383 residents to 349 residents, an intercensal change of -8.9%. The trajectory indicates a contracting community. The Philippine Statistics Authority classifies Barangay San Juan as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Luisiana is a municipality comprising 23 barangays, and serves as the governing unit directly responsible for local services in Barangay San Juan, 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 Juan ranks 608th 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 Juan 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.