Barangay Santiago

Classified as a mid-sized barangay, Barangay Santiago is one of the administrative divisions of Naujan in Oriental Mindoro, MIMAROPA Region, Philippines.

According to the 2020 Philippine census, Barangay Santiago had a population of 2,638. This made it the 8th largest of 70 barangays in Naujan by population, placing it in the upper half of the municipality. Residents of Barangay Santiago accounted for approximately 2.41% 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 Santiago changed from 2,132 to 2,638, a shift of +23.7% over the five-year period. This places the barangay among those with growing populations in Naujan. Barangay Santiago 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 Santiago, 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 Santiago ranks 116th 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.

Like every Philippine barangay, Barangay Santiago is led by an elected Punong Barangay (barangay captain) supported by seven Sangguniang Barangay members (kagawads), an SK Chairperson, a Barangay Secretary, and a Barangay Treasurer. The next Barangay and Sangguniang Kabataan Elections (BSKE) are scheduled for Monday, November 2, 2026, with officials serving four-year terms under Republic Act No. 12232.