Barangay Buenavista

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

According to the 2020 Philippine census, Barangay Buenavista had a population of 1,155. This made it the 4th largest of 11 barangays in Rosario by population, placing it in the upper half of the municipality. Residents of Barangay Buenavista accounted for approximately 10.55% of the total population of Rosario, which stood at 10,949 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Buenavista moving from 1,246 residents to 1,155 residents, an intercensal change of -7.3%. The trajectory indicates a contracting community. Barangay Buenavista is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Rosario is a municipality comprising 11 barangays, and serves as the governing unit directly responsible for local services in Barangay Buenavista, 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 Buenavista ranks 199th 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.

Barangay Buenavista 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.