Barangay Bulo Ibaba

Classified as a small barangay, Barangay Bulo Ibaba is one of the administrative divisions of Unisan in Quezon, CALABARZON, Philippines.

According to the 2020 Philippine census, Barangay Bulo Ibaba had a population of 683. This made it the 15th largest of 36 barangays in Unisan by population, placing it in the middle tier of the municipality. Residents of Barangay Bulo Ibaba accounted for approximately 2.68% of the total population of Unisan, which stood at 25,448 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Bulo Ibaba changed from 736 to 683, a shift of -7.2% over the five-year period. This places the barangay among those with contracting populations in Unisan. Barangay Bulo Ibaba is officially classified 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 Bulo 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 Bulo Ibaba ranks 806th 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.