Barangay San Vicente

Classified as a small barangay, Barangay San Vicente is one of the administrative divisions of Mahayag in Zamboanga Del Sur, Zamboanga Peninsula, Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay San Vicente had a population of 824. This made it the 25th largest of 29 barangays in Mahayag by population, placing it among the smaller barangays of the municipality. Residents of Barangay San Vicente accounted for approximately 1.71% of the total population of Mahayag, which stood at 48,258 in the same census year.

The barangay recorded 772 residents in the 2015 intercensal count and 824 residents in the 2020 Census — a net change of +6.7%, consistent with a growing settlement. The Philippine Statistics Authority classifies Barangay San Vicente as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Mahayag is a municipality comprising 29 barangays, and serves as the governing unit directly responsible for local services in Barangay San Vicente, 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 San Vicente ranks 450th 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.