Barangay San Juan

Barangay San Juan forms part of City of Calamba, a city in Laguna, and is classified as a mid-sized barangay.

According to the 2020 Philippine census, Barangay San Juan had a population of 4,826. This made it the 36th largest of 54 barangays in City of Calamba by population, placing it in the middle tier of the city. Residents of Barangay San Juan accounted for approximately 0.89% of the total population of City of Calamba, which stood at 539,671 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Juan moving from 4,403 residents to 4,826 residents, an intercensal change of +9.6%. The trajectory indicates a growing community. Barangay San Juan is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

City of Calamba is a city comprising 54 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 182nd 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.