Barangay San Agustin

Classified as a small barangay, Barangay San Agustin is one of the administrative divisions of Sagbayan in Bohol, Central Visayas, Philippines.

According to the 2020 Philippine census, Barangay San Agustin had a population of 1,071. This made it the 9th largest of 24 barangays in Sagbayan by population, placing it in the middle tier of the municipality. Residents of Barangay San Agustin accounted for approximately 4.40% of the total population of Sagbayan, which stood at 24,335 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Agustin moving from 1,037 residents to 1,071 residents, an intercensal change of +3.3%. The trajectory indicates a growing community. Barangay San Agustin is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Sagbayan is a municipality comprising 24 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 Bohol, which contains 1,109 barangays across its component cities and municipalities, Barangay San Agustin ranks 468th by 2020 population. Bohol 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.