Barangay Poblacion Sur

Barangay Poblacion Sur is a very small barangay in the municipality of Lidlidda, located in the province of Ilocos Sur, in the Ilocos Region region of the Philippines.

According to the 2020 Philippine census, Barangay Poblacion Sur had a population of 366. This made it the 6th largest of 11 barangays in Lidlidda by population, placing it in the middle tier of the municipality. Residents of Barangay Poblacion Sur accounted for approximately 7.78% of the total population of Lidlidda, which stood at 4,705 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Poblacion Sur changed from 308 to 366, a shift of +18.8% over the five-year period. This places the barangay among those with growing populations in Lidlidda. Barangay Poblacion Sur is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Lidlidda is a municipality comprising 11 barangays, and serves as the governing unit directly responsible for local services in Barangay Poblacion Sur, including public health, sanitation, peace and order, and civil registration. Within the wider province of Ilocos Sur, which contains 768 barangays across its component cities and municipalities, Barangay Poblacion Sur ranks 666th by 2020 population. Ilocos Sur is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay Poblacion Sur 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.