Barangay San Agustin

Barangay San Agustin forms part of Masantol, a municipality in Pampanga, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay San Agustin had a population of 1,782. This made it the 15th largest of 26 barangays in Masantol by population, placing it in the middle tier of the municipality. Residents of Barangay San Agustin accounted for approximately 3.07% of the total population of Masantol, which stood at 57,990 in the same census year.

The barangay recorded 1,534 residents in the 2015 intercensal count and 1,782 residents in the 2020 Census — a net change of +16.2%, consistent with a growing settlement. Barangay San Agustin 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 Agustin, 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 Agustin ranks 417th 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 Agustin 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.