Barangay Banabahin Ibaba

Barangay Banabahin Ibaba forms part of Lopez, a municipality in Quezon, and is classified as a very small barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Banabahin Ibaba had a population of 459. This made it the 62nd largest of 95 barangays in Lopez by population, placing it in the middle tier of the municipality. Residents of Barangay Banabahin Ibaba accounted for approximately 0.48% of the total population of Lopez, which stood at 94,657 in the same census year.

The barangay recorded 341 residents in the 2015 intercensal count and 459 residents in the 2020 Census — a net change of +34.6%, consistent with a growing settlement. The Philippine Statistics Authority classifies Barangay Banabahin Ibaba as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Lopez is a municipality comprising 95 barangays, and serves as the governing unit directly responsible for local services in Barangay Banabahin 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 Banabahin Ibaba ranks 962nd 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.

Barangay Banabahin Ibaba 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.