Barangay Malainin

Barangay Malainin forms part of Ibaan, 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 Malainin had a population of 976. This made it the 24th largest of 26 barangays in Ibaan by population, placing it among the smaller barangays of the municipality. Residents of Barangay Malainin accounted for approximately 1.67% of the total population of Ibaan, which stood at 58,507 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Malainin changed from 1,070 to 976, a shift of -8.8% over the five-year period. This places the barangay among those with contracting populations in Ibaan. The Philippine Statistics Authority classifies Barangay Malainin as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Ibaan is a municipality comprising 26 barangays, and serves as the governing unit directly responsible for local services in Barangay Malainin, 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 Malainin ranks 875th 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.

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.