Barangay Quirino (Pob.)

Barangay Quirino (Pob.) forms part of Naguilian, a municipality in Isabela, and is classified as a mid-sized barangay.

According to the 2020 Philippine census, Barangay Quirino (Pob.) had a population of 2,420. This made it the 5th largest of 25 barangays in Naguilian by population, placing it in the upper half of the municipality. Residents of Barangay Quirino (Pob.) accounted for approximately 7.16% of the total population of Naguilian, which stood at 33,788 in the same census year.

The barangay recorded 2,259 residents in the 2015 intercensal count and 2,420 residents in the 2020 Census — a net change of +7.1%, consistent with a growing settlement. Barangay Quirino (Pob.) is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Naguilian is a municipality comprising 25 barangays, and serves as the governing unit directly responsible for local services in Barangay Quirino (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 Quirino (Pob.) ranks 178th 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 Quirino (Pob.) 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.