Barangay San Antonio

Barangay San Antonio is a small barangay in the municipality of Lal-Lo, located in the province of Cagayan, in the Cagayan Valley region of the Philippines.

According to the 2020 Philippine census, Barangay San Antonio had a population of 805. This made it the 28th largest of 35 barangays in Lal-Lo by population, placing it among the smaller barangays of the municipality. Residents of Barangay San Antonio accounted for approximately 1.65% of the total population of Lal-Lo, which stood at 48,733 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Antonio moving from 782 residents to 805 residents, an intercensal change of +2.9%. 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.

Lal-Lo is a municipality comprising 35 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 603rd 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.