Barangay Poblacion South

Situated in San Juan, Abra, Barangay Poblacion South is one of 19 barangays that make up the municipality within CAR.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Poblacion South had a population of 400. This made it the 14th largest of 19 barangays in San Juan by population, placing it in the middle tier of the municipality. Residents of Barangay Poblacion South accounted for approximately 3.74% of the total population of San Juan, which stood at 10,688 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Poblacion South moving from 397 residents to 400 residents, an intercensal change of +0.8%. The trajectory indicates a slowly expanding community. The Philippine Statistics Authority classifies Barangay Poblacion South as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

San Juan is a municipality comprising 19 barangays, and serves as the governing unit directly responsible for local services in Barangay Poblacion South, including public health, sanitation, peace and order, and civil registration. Within the wider province of Abra, which contains 303 barangays across its component cities and municipalities, Barangay Poblacion South ranks 242nd by 2020 population. Abra is classified as a 3rd by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Like every Philippine barangay, Barangay Poblacion South is led by an elected Punong Barangay (barangay captain) supported by seven Sangguniang Barangay members (kagawads), an SK Chairperson, a Barangay Secretary, and a Barangay Treasurer. The next Barangay and Sangguniang Kabataan Elections (BSKE) are scheduled for Monday, November 2, 2026, with officials serving four-year terms under Republic Act No. 12232.