Barangay A. Mabini

Situated in Guinayangan, Quezon, Barangay A. Mabini is one of 54 barangays that make up the municipality within CALABARZON.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay A. Mabini had a population of 714. This made it the 23rd largest of 54 barangays in Guinayangan by population, placing it in the middle tier of the municipality. Residents of Barangay A. Mabini accounted for approximately 1.62% of the total population of Guinayangan, which stood at 44,045 in the same census year.

Census comparisons between 2015 and 2020 show Barangay A. Mabini moving from 725 residents to 714 residents, an intercensal change of -1.5%. The trajectory indicates a broadly stable community. The Philippine Statistics Authority classifies Barangay A. Mabini as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Guinayangan is a municipality comprising 54 barangays, and serves as the governing unit directly responsible for local services in Barangay A. Mabini, including public health, sanitation, peace and order, and civil registration. Within the wider province of Quezon, which contains 1,242 barangays across its component cities and municipalities, Barangay A. Mabini ranks 779th by 2020 population. Quezon 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 A. 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.