Barangay San Juan

Situated in Delfin Albano, Isabela, Barangay San Juan is one of 29 barangays that make up the municipality within Cagayan Valley.

According to the 2020 Philippine census, Barangay San Juan had a population of 2,018. This made it the 3rd largest of 29 barangays in Delfin Albano by population, placing it among the most populous barangays of the municipality. Residents of Barangay San Juan accounted for approximately 6.74% of the total population of Delfin Albano, which stood at 29,928 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Juan moving from 1,790 residents to 2,018 residents, an intercensal change of +12.7%. 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.

Delfin Albano is a municipality comprising 29 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 265th 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.