Barangay Poblacion Alto

Barangay Poblacion Alto forms part of Sergio osmeña Sr., a municipality in Zamboanga Del Norte, and is classified as a mid-sized barangay.

According to the 2020 Philippine census, Barangay Poblacion Alto had a population of 2,183. This made it the 2nd largest of 39 barangays in Sergio osmeña Sr. by population, placing it among the most populous barangays of the municipality. Residents of Barangay Poblacion Alto accounted for approximately 6.83% of the total population of Sergio osmeña Sr., which stood at 31,942 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Poblacion Alto moving from 1,819 residents to 2,183 residents, an intercensal change of +20.0%. The trajectory indicates a growing community. Barangay Poblacion Alto is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Sergio osmeña Sr. is a municipality comprising 39 barangays, and serves as the governing unit directly responsible for local services in Barangay Poblacion Alto, including public health, sanitation, peace and order, and civil registration. Within the wider province of Zamboanga Del Norte, which contains 691 barangays across its component cities and municipalities, Barangay Poblacion Alto ranks 121st by 2020 population. Zamboanga Del Norte is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay Poblacion Alto 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.