Barangay San Antonio Magkupa

Barangay San Antonio Magkupa forms part of Catanauan, a municipality in Quezon, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay San Antonio Magkupa had a population of 802. This made it the 36th largest of 46 barangays in Catanauan by population, placing it among the smaller barangays of the municipality. Residents of Barangay San Antonio Magkupa accounted for approximately 1.10% of the total population of Catanauan, which stood at 72,752 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay San Antonio Magkupa changed from 729 to 802, a shift of +10.0% over the five-year period. This places the barangay among those with growing populations in Catanauan. Barangay San Antonio Magkupa is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Catanauan is a municipality comprising 46 barangays, and serves as the governing unit directly responsible for local services in Barangay San Antonio Magkupa, including public health, sanitation, peace and order, and civil registration. Within the wider province of Quezon, which contains 1,242 barangays across its component cities and municipalities, Barangay San Antonio Magkupa ranks 717th by 2020 population. Quezon 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.