Barangay Mabini

Classified as a small barangay, Barangay Mabini is one of the administrative divisions of Agoncillo in Batangas, CALABARZON, Philippines.

According to the 2020 Philippine census, Barangay Mabini had a population of 1,308. This made it the 13th largest of 21 barangays in Agoncillo by population, placing it in the middle tier of the municipality. Residents of Barangay Mabini accounted for approximately 3.35% of the total population of Agoncillo, which stood at 39,101 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Mabini moving from 1,185 residents to 1,308 residents, an intercensal change of +10.4%. The trajectory indicates a growing community. Barangay Mabini is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Agoncillo is a municipality comprising 21 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 Batangas, which contains 1,078 barangays across its component cities and municipalities, Barangay Mabini ranks 766th by 2020 population. Batangas 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 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.