Barangay Tinambacan Sur

Classified as a mid-sized barangay, Barangay Tinambacan Sur is one of the administrative divisions of City of Calbayog in Samar, Eastern Visayas, Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Tinambacan Sur had a population of 3,269. This made it the 12th largest of 157 barangays in City of Calbayog by population, placing it among the most populous barangays of the city. Residents of Barangay Tinambacan Sur accounted for approximately 1.75% of the total population of City of Calbayog, which stood at 186,960 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Tinambacan Sur moving from 3,281 residents to 3,269 residents, an intercensal change of -0.4%. The trajectory indicates a broadly stable community. The Philippine Statistics Authority classifies Barangay Tinambacan Sur as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

City of Calbayog is a city comprising 157 barangays, and serves as the governing unit directly responsible for local services in Barangay Tinambacan Sur, including public health, sanitation, peace and order, and civil registration. Within the wider province of Samar, which contains 951 barangays across its component cities and municipalities, Barangay Tinambacan Sur ranks 24th by 2020 population. Samar is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Like every Philippine barangay, Barangay Tinambacan Sur 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.