Barangay Mairok Ibaba

Barangay Mairok Ibaba is a very small barangay in the municipality of Unisan, located in the province of Quezon, in the CALABARZON region of the Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Mairok Ibaba had a population of 311. This made it the 30th largest of 36 barangays in Unisan by population, placing it among the smaller barangays of the municipality. Residents of Barangay Mairok Ibaba accounted for approximately 1.22% of the total population of Unisan, which stood at 25,448 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Mairok Ibaba moving from 253 residents to 311 residents, an intercensal change of +22.9%. The trajectory indicates a growing community. The Philippine Statistics Authority classifies Barangay Mairok Ibaba as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Unisan is a municipality comprising 36 barangays, and serves as the governing unit directly responsible for local services in Barangay Mairok Ibaba, 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 Mairok Ibaba ranks 1078th 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.

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.