Barangay Agsao

Classified as a small barangay, Barangay Agsao is one of the administrative divisions of Magdiwang in Romblon, MIMAROPA Region, Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Agsao had a population of 826. This made it the 9th largest of 9 barangays in Magdiwang by population, placing it among the smaller barangays of the municipality. Residents of Barangay Agsao accounted for approximately 5.37% of the total population of Magdiwang, which stood at 15,385 in the same census year.

The barangay recorded 782 residents in the 2015 intercensal count and 826 residents in the 2020 Census — a net change of +5.6%, consistent with a growing settlement. The Philippine Statistics Authority classifies Barangay Agsao as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Magdiwang is a municipality comprising 9 barangays, and serves as the governing unit directly responsible for local services in Barangay Agsao, including public health, sanitation, peace and order, and civil registration. Within the wider province of Romblon, which contains 219 barangays across its component cities and municipalities, Barangay Agsao ranks 155th by 2020 population. Romblon is classified as a 3rd 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.