Barangay San Juan

Barangay San Juan is a mid-sized barangay in the city of City of Ilagan, located in the province of Isabela, in the Cagayan Valley region of the Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay San Juan had a population of 2,041. This made it the 24th largest of 91 barangays in City of Ilagan by population, placing it in the upper half of the city. Residents of Barangay San Juan accounted for approximately 1.29% of the total population of City of Ilagan, which stood at 158,218 in the same census year.

The barangay recorded 1,906 residents in the 2015 intercensal count and 2,041 residents in the 2020 Census — a net change of +7.1%, consistent with a growing settlement. 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.

City of Ilagan is a city comprising 91 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 Isabela, which contains 1,055 barangays across its component cities and municipalities, Barangay San Juan ranks 258th by 2020 population. Isabela 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.