Barangay San Isidro

Barangay San Isidro is a small barangay in the municipality of Mulanay, located in the province of Quezon, in the CALABARZON region of the Philippines.

According to the 2020 Philippine census, Barangay San Isidro had a population of 1,460. This made it the 19th largest of 28 barangays in Mulanay by population, placing it in the middle tier of the municipality. Residents of Barangay San Isidro accounted for approximately 2.63% of the total population of Mulanay, which stood at 55,576 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Isidro moving from 1,423 residents to 1,460 residents, an intercensal change of +2.6%. The trajectory indicates a growing community. Barangay San Isidro is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Mulanay is a municipality comprising 28 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 437th 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.

Like every Philippine barangay, Barangay San Isidro is led by an elected Punong Barangay (barangay captain) supported by seven Sangguniang Barangay members (kagawads), an SK Chairperson, a Barangay Secretary, and a Barangay Treasurer. The next Barangay and Sangguniang Kabataan Elections (BSKE) are scheduled for Monday, November 2, 2026, with officials serving four-year terms under Republic Act No. 12232.