Barangay San Isidro Anac

Situated in Masantol, Pampanga, Barangay San Isidro Anac is one of 26 barangays that make up the municipality within Central Luzon.

According to the 2020 Philippine census, Barangay San Isidro Anac had a population of 1,100. This made it the 24th largest of 26 barangays in Masantol by population, placing it among the smaller barangays of the municipality. Residents of Barangay San Isidro Anac accounted for approximately 1.90% of the total population of Masantol, which stood at 57,990 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Isidro Anac moving from 1,144 residents to 1,100 residents, an intercensal change of -3.8%. The trajectory indicates a contracting community. Barangay San Isidro Anac is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Masantol is a municipality comprising 26 barangays, and serves as the governing unit directly responsible for local services in Barangay San Isidro Anac, including public health, sanitation, peace and order, and civil registration. Within the wider province of Pampanga, which contains 538 barangays across its component cities and municipalities, Barangay San Isidro Anac ranks 473rd by 2020 population. Pampanga 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 Anac 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.