Barangay San Sebastian

Situated in Ramon, Isabela, Barangay San Sebastian is one of 19 barangays that make up the municipality within Cagayan Valley.

According to the 2020 Philippine census, Barangay San Sebastian had a population of 1,461. This made it the 13th largest of 19 barangays in Ramon by population, placing it in the middle tier of the municipality. Residents of Barangay San Sebastian accounted for approximately 2.58% of the total population of Ramon, which stood at 56,523 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Sebastian moving from 1,453 residents to 1,461 residents, an intercensal change of +0.6%. The trajectory indicates a slowly expanding community. Barangay San Sebastian is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Ramon is a municipality comprising 19 barangays, and serves as the governing unit directly responsible for local services in Barangay San Sebastian, 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 Sebastian ranks 434th 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.

Like every Philippine barangay, Barangay San Sebastian is led by an elected Punong Barangay (barangay captain) supported by seven Sangguniang Barangay members (kagawads), an SK Chairperson, a Barangay Secretary, and a Barangay Treasurer. The next Barangay and Sangguniang Kabataan Elections (BSKE) are scheduled for Monday, November 2, 2026, with officials serving four-year terms under Republic Act No. 12232.