Barangay San Sebastian

Classified as a small barangay, Barangay San Sebastian is one of the administrative divisions of Jones in Isabela, Cagayan Valley, Philippines.

According to the 2020 Philippine census, Barangay San Sebastian had a population of 889. This made it the 20th largest of 42 barangays in Jones by population, placing it in the middle tier of the municipality. Residents of Barangay San Sebastian accounted for approximately 1.95% of the total population of Jones, which stood at 45,628 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Sebastian moving from 878 residents to 889 residents, an intercensal change of +1.3%. 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.

Jones is a municipality comprising 42 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 714th 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.