Barangay Agosais

Barangay Agosais is a very small barangay in the municipality of Lagonoy, located in the province of Camarines Sur, in the Bicol Region region of the Philippines.

According to the 2020 Philippine census, Barangay Agosais had a population of 390. This made it the 38th largest of 38 barangays in Lagonoy by population, placing it among the smaller barangays of the municipality. Residents of Barangay Agosais accounted for approximately 0.69% of the total population of Lagonoy, which stood at 56,714 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Agosais moving from 338 residents to 390 residents, an intercensal change of +15.4%. The trajectory indicates a growing community. Barangay Agosais is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Lagonoy is a municipality comprising 38 barangays, and serves as the governing unit directly responsible for local services in Barangay Agosais, including public health, sanitation, peace and order, and civil registration. Within the wider province of Camarines Sur, which contains 1,063 barangays across its component cities and municipalities, Barangay Agosais ranks 1018th by 2020 population. Camarines Sur is classified as a 1st 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.