Barangay Bretania

Barangay Bretania forms part of San Agustin, a municipality in Surigao Del Sur, and is classified as a small barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Bretania had a population of 1,215. This made it the 10th largest of 13 barangays in San Agustin by population, placing it in the middle tier of the municipality. Residents of Barangay Bretania accounted for approximately 5.32% of the total population of San Agustin, which stood at 22,855 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Bretania moving from 966 residents to 1,215 residents, an intercensal change of +25.8%. The trajectory indicates a growing community. The Philippine Statistics Authority classifies Barangay Bretania as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

San Agustin is a municipality comprising 13 barangays, and serves as the governing unit directly responsible for local services in Barangay Bretania, including public health, sanitation, peace and order, and civil registration. Within the wider province of Surigao Del Sur, which contains 309 barangays across its component cities and municipalities, Barangay Bretania ranks 190th by 2020 population. Surigao Del Sur 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 Bretania 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.