Barangay San Macario

Barangay San Macario is a small barangay in the municipality of Delfin Albano, located in the province of Isabela, in the Cagayan Valley region of the Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay San Macario had a population of 632. This made it the 20th largest of 29 barangays in Delfin Albano by population, placing it in the middle tier of the municipality. Residents of Barangay San Macario accounted for approximately 2.11% of the total population of Delfin Albano, which stood at 29,928 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Macario moving from 552 residents to 632 residents, an intercensal change of +14.5%. The trajectory indicates a growing community. The Philippine Statistics Authority classifies Barangay San Macario as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Delfin Albano is a municipality comprising 29 barangays, and serves as the governing unit directly responsible for local services in Barangay San Macario, 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 Macario ranks 862nd 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 San Macario 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.