Barangay Janaojanao

Situated in San Juan, Batangas, Barangay Janaojanao is one of 42 barangays that make up the municipality within CALABARZON.

According to the 2020 Philippine census, Barangay Janaojanao had a population of 1,638. This made it the 35th largest of 42 barangays in San Juan by population, placing it among the smaller barangays of the municipality. Residents of Barangay Janaojanao accounted for approximately 1.44% of the total population of San Juan, which stood at 114,068 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Janaojanao moving from 1,511 residents to 1,638 residents, an intercensal change of +8.4%. The trajectory indicates a growing community. Barangay Janaojanao is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

San Juan is a municipality comprising 42 barangays, and serves as the governing unit directly responsible for local services in Barangay Janaojanao, 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 Janaojanao ranks 660th 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.

Barangay Janaojanao 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.