Barangay Mabini

Barangay Mabini forms part of Donsol, a municipality in Sorsogon, and is classified as a small barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Mabini had a population of 872. This made it the 19th largest of 51 barangays in Donsol by population, placing it in the middle tier of the municipality. Residents of Barangay Mabini accounted for approximately 1.73% of the total population of Donsol, which stood at 50,281 in the same census year.

The barangay recorded 704 residents in the 2015 intercensal count and 872 residents in the 2020 Census — a net change of +23.9%, consistent with a growing settlement. The Philippine Statistics Authority classifies Barangay Mabini as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Donsol is a municipality comprising 51 barangays, and serves as the governing unit directly responsible for local services in Barangay Mabini, including public health, sanitation, peace and order, and civil registration. Within the wider province of Sorsogon, which contains 541 barangays across its component cities and municipalities, Barangay Mabini ranks 368th by 2020 population. Sorsogon 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 Mabini 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.