Barangay Montelago

Barangay Montelago forms part of Naujan, a municipality in Oriental Mindoro, and is classified as a mid-sized barangay.

According to the 2020 Philippine census, Barangay Montelago had a population of 2,057. This made it the 16th largest of 70 barangays in Naujan by population, placing it in the upper half of the municipality. Residents of Barangay Montelago accounted for approximately 1.88% of the total population of Naujan, which stood at 109,587 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Montelago changed from 2,161 to 2,057, a shift of -4.8% over the five-year period. This places the barangay among those with contracting populations in Naujan. Barangay Montelago is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Naujan is a municipality comprising 70 barangays, and serves as the governing unit directly responsible for local services in Barangay Montelago, including public health, sanitation, peace and order, and civil registration. Within the wider province of Oriental Mindoro, which contains 426 barangays across its component cities and municipalities, Barangay Montelago ranks 166th by 2020 population. Oriental Mindoro is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay Montelago 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.