Barangay San Mariano

Situated in San Pascual, Batangas, Barangay San Mariano is one of 29 barangays that make up the municipality within CALABARZON.

According to the 2020 Philippine census, Barangay San Mariano had a population of 1,946. This made it the 12th largest of 29 barangays in San Pascual by population, placing it in the middle tier of the municipality. Residents of Barangay San Mariano accounted for approximately 2.82% of the total population of San Pascual, which stood at 69,009 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Mariano moving from 2,336 residents to 1,946 residents, an intercensal change of -16.7%. The trajectory indicates a contracting community. Barangay San Mariano is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

San Pascual is a municipality comprising 29 barangays, and serves as the governing unit directly responsible for local services in Barangay San Mariano, including public health, sanitation, peace and order, and civil registration. Within the wider province of Batangas, which contains 1,078 barangays across its component cities and municipalities, Barangay San Mariano ranks 561st by 2020 population. Batangas 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 Mariano 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.