Barangay San Juan

Situated in Alicia, Isabela, Barangay San Juan is one of 34 barangays that make up the municipality within Cagayan Valley.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay San Juan had a population of 1,793. This made it the 19th largest of 34 barangays in Alicia by population, placing it in the middle tier of the municipality. Residents of Barangay San Juan accounted for approximately 2.43% of the total population of Alicia, which stood at 73,874 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay San Juan changed from 1,781 to 1,793, a shift of +0.7% over the five-year period. This places the barangay among those with slowly expanding populations in Alicia. 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.

Alicia is a municipality comprising 34 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 327th 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.

The barangay's legislative and executive affairs are handled by a Punong Barangay and the Sangguniang Barangay, elected nationwide during the Barangay and SK Elections. The next BSKE is scheduled for Monday, November 2, 2026, following the synchronized election schedule set by COMELEC Resolution No. 11191.