Barangay San Antonio

Classified as a mid-sized barangay, Barangay San Antonio is one of the administrative divisions of Ajuy in Iloilo, Western Visayas, Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay San Antonio had a population of 3,151. This made it the 4th largest of 34 barangays in Ajuy by population, placing it among the most populous barangays of the municipality. Residents of Barangay San Antonio accounted for approximately 5.89% of the total population of Ajuy, which stood at 53,462 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Antonio moving from 2,608 residents to 3,151 residents, an intercensal change of +20.8%. The trajectory indicates a growing community. 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.

Ajuy is a municipality comprising 34 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 Iloilo, which contains 1,901 barangays across its component cities and municipalities, Barangay San Antonio ranks 74th by 2020 population. Iloilo 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.