Barangay San Antonio

Situated in Baggao, Cagayan, Barangay San Antonio is one of 48 barangays that make up the municipality within Cagayan Valley.

According to the 2020 Philippine census, Barangay San Antonio had a population of 612. This made it the 46th largest of 48 barangays in Baggao by population, placing it among the smaller barangays of the municipality. Residents of Barangay San Antonio accounted for approximately 0.70% of the total population of Baggao, which stood at 87,753 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Antonio moving from 442 residents to 612 residents, an intercensal change of +38.5%. 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.

Baggao is a municipality comprising 48 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 Cagayan, which contains 820 barangays across its component cities and municipalities, Barangay San Antonio ranks 689th by 2020 population. Cagayan is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay San Antonio is governed by an elected Sangguniang Barangay composed of a Punong Barangay and seven kagawads, with the Sangguniang Kabataan representing the youth. The next BSKE, set for Monday, November 2, 2026, will elect officials to four-year terms as provided under Republic Act No. 12232.