Barangay Santa Rosa Del Sur (Pob.)

Barangay Santa Rosa Del Sur (Pob.) forms part of Pasacao, a municipality in Camarines Sur, and is classified as a mid-sized barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Santa Rosa Del Sur (Pob.) had a population of 3,527. This made it the 6th largest of 19 barangays in Pasacao by population, placing it in the upper half of the municipality. Residents of Barangay Santa Rosa Del Sur (Pob.) accounted for approximately 6.60% of the total population of Pasacao, which stood at 53,461 in the same census year.

The barangay recorded 3,565 residents in the 2015 intercensal count and 3,527 residents in the 2020 Census — a net change of -1.1%, consistent with a broadly stable settlement. The Philippine Statistics Authority classifies Barangay Santa Rosa Del Sur (Pob.) as urban, reflecting the density and built-up character of the area.

Pasacao is a municipality comprising 19 barangays, and serves as the governing unit directly responsible for local services in Barangay Santa Rosa Del Sur (Pob.), 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 Santa Rosa Del Sur (Pob.) ranks 118th 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.