Barangay South Mapang

Barangay South Mapang forms part of Rizal, a municipality in Zamboanga Del Norte, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay South Mapang had a population of 1,157. This made it the 1st largest of 22 barangays in Rizal by population, placing it among the most populous barangays of the municipality. Residents of Barangay South Mapang accounted for approximately 7.69% of the total population of Rizal, which stood at 15,052 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay South Mapang changed from 981 to 1,157, a shift of +17.9% over the five-year period. This places the barangay among those with growing populations in Rizal. Barangay South Mapang is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Rizal is a municipality comprising 22 barangays, and serves as the governing unit directly responsible for local services in Barangay South Mapang, 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 South Mapang ranks 338th 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 South Mapang 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.