Barangay San Antonio

Classified as a small barangay, Barangay San Antonio is one of the administrative divisions of City of Tandag in Surigao Del Sur, Caraga, Philippines.

According to the 2020 Philippine census, Barangay San Antonio had a population of 909. This made it the 17th largest of 21 barangays in City of Tandag by population, placing it among the smaller barangays of the city. Residents of Barangay San Antonio accounted for approximately 1.45% of the total population of City of Tandag, which stood at 62,669 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Antonio moving from 669 residents to 909 residents, an intercensal change of +35.9%. The trajectory indicates a growing community. Barangay San Antonio is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

City of Tandag is a city comprising 21 barangays, and serves as the governing unit directly responsible for local services in Barangay San Antonio, including public health, sanitation, peace and order, and civil registration. Within the wider province of Surigao Del Sur, which contains 309 barangays across its component cities and municipalities, Barangay San Antonio ranks 239th by 2020 population. Surigao Del 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.