Barangay San Antonio

Classified as a mid-sized barangay, Barangay San Antonio is one of the administrative divisions of Sibulan in Negros Oriental, Central Visayas, Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay San Antonio had a population of 3,068. This made it the 9th largest of 15 barangays in Sibulan by population, placing it in the middle tier of the municipality. Residents of Barangay San Antonio accounted for approximately 4.77% of the total population of Sibulan, which stood at 64,343 in the same census year.

The barangay recorded 2,774 residents in the 2015 intercensal count and 3,068 residents in the 2020 Census — a net change of +10.6%, consistent with a growing settlement. The Philippine Statistics Authority classifies Barangay San Antonio as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Sibulan is a municipality comprising 15 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 Negros Oriental, which contains 557 barangays across its component cities and municipalities, Barangay San Antonio ranks 156th by 2020 population. Negros Oriental 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 San Antonio 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.