Barangay Mabini

Situated in Tubajon, Dinagat Islands, Barangay Mabini is one of 9 barangays that make up the municipality within Caraga.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Mabini had a population of 1,174. This made it the 3rd largest of 9 barangays in Tubajon by population, placing it in the upper half of the municipality. Residents of Barangay Mabini accounted for approximately 14.46% of the total population of Tubajon, which stood at 8,119 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Mabini moving from 1,204 residents to 1,174 residents, an intercensal change of -2.5%. The trajectory indicates a contracting community. 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.

Tubajon is a municipality comprising 9 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 Dinagat Islands, which contains 100 barangays across its component cities and municipalities, Barangay Mabini ranks 49th by 2020 population. Dinagat Islands is classified as a 4th by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

The barangay's legislative and executive affairs are handled by a Punong Barangay and the Sangguniang Barangay, elected nationwide during the Barangay and SK Elections. The next BSKE is scheduled for Monday, November 2, 2026, following the synchronized election schedule set by COMELEC Resolution No. 11191.