Barangay Matun-og

Barangay Matun-og is a very small barangay in the municipality of Bayog, located in the province of Zamboanga Del Sur, in the Zamboanga Peninsula region of the Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Matun-og had a population of 470. This made it the 25th largest of 28 barangays in Bayog by population, placing it among the smaller barangays of the municipality. Residents of Barangay Matun-og accounted for approximately 1.36% of the total population of Bayog, which stood at 34,519 in the same census year.

The barangay recorded 451 residents in the 2015 intercensal count and 470 residents in the 2020 Census — a net change of +4.2%, consistent with a growing settlement. The Philippine Statistics Authority classifies Barangay Matun-og as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Bayog is a municipality comprising 28 barangays, and serves as the governing unit directly responsible for local services in Barangay Matun-og, including public health, sanitation, peace and order, and civil registration. Within the wider province of Zamboanga Del Sur, which contains 779 barangays across its component cities and municipalities, Barangay Matun-og ranks 612th by 2020 population. Zamboanga Del Sur is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

The barangay's legislative and executive affairs are handled by a Punong Barangay and the Sangguniang Barangay, elected nationwide during the Barangay and SK Elections. The next BSKE is scheduled for Monday, November 2, 2026, following the synchronized election schedule set by COMELEC Resolution No. 11191.