Barangay Upper Sepaka

Barangay Upper Sepaka forms part of Surallah, a municipality in South Cotabato, and is classified as a mid-sized barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Upper Sepaka had a population of 3,868. This made it the 9th largest of 17 barangays in Surallah by population, placing it in the middle tier of the municipality. Residents of Barangay Upper Sepaka accounted for approximately 4.33% of the total population of Surallah, which stood at 89,340 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Upper Sepaka moving from 4,774 residents to 3,868 residents, an intercensal change of -19.0%. The trajectory indicates a contracting community. The Philippine Statistics Authority classifies Barangay Upper Sepaka as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Surallah is a municipality comprising 17 barangays, and serves as the governing unit directly responsible for local services in Barangay Upper Sepaka, including public health, sanitation, peace and order, and civil registration. Within the wider province of South Cotabato, which contains 225 barangays across its component cities and municipalities, Barangay Upper Sepaka ranks 91st by 2020 population. South Cotabato is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay Upper Sepaka 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.