Barangay Santos (Pob.)

Situated in Quezon, Isabela, Barangay Santos (Pob.) is one of 15 barangays that make up the municipality within Cagayan Valley.

According to the 2020 Philippine census, Barangay Santos (Pob.) had a population of 3,310. This made it the 3rd largest of 15 barangays in Quezon by population, placing it in the upper half of the municipality. Residents of Barangay Santos (Pob.) accounted for approximately 12.24% of the total population of Quezon, which stood at 27,037 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Santos (Pob.) moving from 3,192 residents to 3,310 residents, an intercensal change of +3.7%. The trajectory indicates a growing community. Barangay Santos (Pob.) is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Quezon is a municipality comprising 15 barangays, and serves as the governing unit directly responsible for local services in Barangay Santos (Pob.), 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 Santos (Pob.) ranks 81st 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 Santos (Pob.) 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.