Barangay Santo Niño

Barangay Santo Niño forms part of Mabini, a municipality in Batangas, and is classified as a small barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Santo Niño had a population of 680. This made it the 34th largest of 34 barangays in Mabini by population, placing it among the smaller barangays of the municipality. Residents of Barangay Santo Niño accounted for approximately 1.34% of the total population of Mabini, which stood at 50,858 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Santo Niño moving from 678 residents to 680 residents, an intercensal change of +0.3%. The trajectory indicates a slowly expanding community. The Philippine Statistics Authority classifies Barangay Santo Niño as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Mabini is a municipality comprising 34 barangays, and serves as the governing unit directly responsible for local services in Barangay Santo Niño, 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 Santo Niño ranks 979th 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.

Barangay Santo Niño is governed by an elected Sangguniang Barangay composed of a Punong Barangay and seven kagawads, with the Sangguniang Kabataan representing the youth. The next BSKE, set for Monday, November 2, 2026, will elect officials to four-year terms as provided under Republic Act No. 12232.