Barangay San Agustin

Situated in San Jose, Occidental Mindoro, Barangay San Agustin is one of 39 barangays that make up the municipality within MIMAROPA Region.

According to the 2020 Philippine census, Barangay San Agustin had a population of 5,019. This made it the 10th largest of 39 barangays in San Jose by population, placing it in the upper half of the municipality. Residents of Barangay San Agustin accounted for approximately 3.27% of the total population of San Jose, which stood at 153,267 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Agustin moving from 5,363 residents to 5,019 residents, an intercensal change of -6.4%. The trajectory indicates a contracting community. Barangay San Agustin is officially classified as urban, reflecting the density and built-up character of the area.

San Jose is a municipality comprising 39 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 Occidental Mindoro, which contains 164 barangays across its component cities and municipalities, Barangay San Agustin ranks 28th by 2020 population. Occidental Mindoro is classified as a 2nd 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.