Barangay San Antonio

Situated in Culasi, Antique, Barangay San Antonio is one of 44 barangays that make up the municipality within Western Visayas.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay San Antonio had a population of 950. This made it the 14th largest of 44 barangays in Culasi by population, placing it in the upper half of the municipality. Residents of Barangay San Antonio accounted for approximately 2.14% of the total population of Culasi, which stood at 44,494 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Antonio moving from 962 residents to 950 residents, an intercensal change of -1.2%. The trajectory indicates a broadly stable 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.

Culasi is a municipality comprising 44 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 Antique, which contains 590 barangays across its component cities and municipalities, Barangay San Antonio ranks 236th by 2020 population. Antique is classified as a 2nd 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.