Barangay Santo Rosario

Barangay Santo Rosario forms part of Santa Catalina, a municipality in Negros Oriental, and is classified as a small barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Santo Rosario had a population of 1,063. This made it the 22nd largest of 22 barangays in Santa Catalina by population, placing it among the smaller barangays of the municipality. Residents of Barangay Santo Rosario accounted for approximately 1.37% of the total population of Santa Catalina, which stood at 77,501 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Santo Rosario moving from 1,175 residents to 1,063 residents, an intercensal change of -9.5%. The trajectory indicates a contracting community. The Philippine Statistics Authority classifies Barangay Santo Rosario as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Santa Catalina is a municipality comprising 22 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 Negros Oriental, which contains 557 barangays across its component cities and municipalities, Barangay Santo Rosario ranks 444th by 2020 population. Negros Oriental 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.