Barangay San Isidro

Situated in Mauban, Quezon, Barangay San Isidro is one of 40 barangays that make up the municipality within CALABARZON.

According to the 2020 Philippine census, Barangay San Isidro had a population of 440. This made it the 32nd largest of 40 barangays in Mauban by population, placing it among the smaller barangays of the municipality. Residents of Barangay San Isidro accounted for approximately 0.62% of the total population of Mauban, which stood at 71,081 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay San Isidro changed from 342 to 440, a shift of +28.7% over the five-year period. This places the barangay among those with growing populations in Mauban. Barangay San Isidro is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Mauban is a municipality comprising 40 barangays, and serves as the governing unit directly responsible for local services in Barangay San Isidro, 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 Isidro ranks 978th 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.