Barangay Pilar

Situated in San Antonio, Northern Samar, Barangay Pilar is one of 10 barangays that make up the municipality within Eastern Visayas.

According to the 2020 Philippine census, Barangay Pilar had a population of 690. This made it the 7th largest of 10 barangays in San Antonio by population, placing it in the middle tier of the municipality. Residents of Barangay Pilar accounted for approximately 7.77% of the total population of San Antonio, which stood at 8,882 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Pilar changed from 716 to 690, a shift of -3.6% over the five-year period. This places the barangay among those with contracting populations in San Antonio. Barangay Pilar is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

San Antonio is a municipality comprising 10 barangays, and serves as the governing unit directly responsible for local services in Barangay Pilar, including public health, sanitation, peace and order, and civil registration. Within the wider province of Northern Samar, which contains 569 barangays across its component cities and municipalities, Barangay Pilar ranks 332nd by 2020 population. Northern Samar is classified as a 2nd by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

The barangay's legislative and executive affairs are handled by a Punong Barangay and the Sangguniang Barangay, elected nationwide during the Barangay and SK Elections. The next BSKE is scheduled for Monday, November 2, 2026, following the synchronized election schedule set by COMELEC Resolution No. 11191.