Barangay MacArthur

Classified as a small barangay, Barangay MacArthur is one of the administrative divisions of Biri in Northern Samar, Eastern Visayas, Philippines.

According to the 2020 Philippine census, Barangay MacArthur had a population of 547. This made it the 8th largest of 8 barangays in Biri by population, placing it among the smaller barangays of the municipality. Residents of Barangay MacArthur accounted for approximately 4.85% of the total population of Biri, which stood at 11,274 in the same census year.

The barangay recorded 525 residents in the 2015 intercensal count and 547 residents in the 2020 Census — a net change of +4.2%, consistent with a growing settlement. Barangay MacArthur is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Biri is a municipality comprising 8 barangays, and serves as the governing unit directly responsible for local services in Barangay MacArthur, 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 MacArthur ranks 396th 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.