Barangay Cullalabo San Antonio

Barangay Cullalabo San Antonio forms part of Burgos, a municipality in Isabela, and is classified as a mid-sized barangay.

According to the 2020 Philippine census, Barangay Cullalabo San Antonio had a population of 3,391. This made it the 2nd largest of 14 barangays in Burgos by population, placing it among the most populous barangays of the municipality. Residents of Barangay Cullalabo San Antonio accounted for approximately 13.02% of the total population of Burgos, which stood at 26,040 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Cullalabo San Antonio moving from 3,103 residents to 3,391 residents, an intercensal change of +9.3%. The trajectory indicates a growing community. Barangay Cullalabo San Antonio is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Burgos is a municipality comprising 14 barangays, and serves as the governing unit directly responsible for local services in Barangay Cullalabo San Antonio, 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 Cullalabo San Antonio ranks 79th 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 Cullalabo San Antonio 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.