Barangay Mangero

Barangay Mangero forms part of San Andres, a municipality in Quezon, and is classified as a mid-sized barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Mangero had a population of 4,784. This made it the 5th largest of 7 barangays in San Andres by population, placing it in the middle tier of the municipality. Residents of Barangay Mangero accounted for approximately 12.77% of the total population of San Andres, which stood at 37,454 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Mangero moving from 3,844 residents to 4,784 residents, an intercensal change of +24.5%. The trajectory indicates a growing community. The Philippine Statistics Authority classifies Barangay Mangero as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

San Andres is a municipality comprising 7 barangays, and serves as the governing unit directly responsible for local services in Barangay Mangero, 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 Mangero ranks 71st 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.

Barangay Mangero 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.