Barangay Santo Rosario

Barangay Santo Rosario forms part of Ramon Magsaysay, a municipality in Zamboanga Del Sur, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay Santo Rosario had a population of 661. This made it the 18th largest of 27 barangays in Ramon Magsaysay by population, placing it in the middle tier of the municipality. Residents of Barangay Santo Rosario accounted for approximately 2.42% of the total population of Ramon Magsaysay, which stood at 27,280 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Santo Rosario moving from 631 residents to 661 residents, an intercensal change of +4.8%. The trajectory indicates a growing community. Barangay Santo Rosario is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Ramon Magsaysay is a municipality comprising 27 barangays, and serves as the governing unit directly responsible for local services in Barangay Santo Rosario, including public health, sanitation, peace and order, and civil registration. Within the wider province of Zamboanga Del Sur, which contains 779 barangays across its component cities and municipalities, Barangay Santo Rosario ranks 534th by 2020 population. Zamboanga Del 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.