Barangay Tagnanan

Classified as a large barangay, Barangay Tagnanan is one of the administrative divisions of Mabini in Davao De Oro, Davao Region, Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Tagnanan had a population of 5,805. This made it the 3rd largest of 11 barangays in Mabini by population, placing it in the upper half of the municipality. Residents of Barangay Tagnanan accounted for approximately 13.33% of the total population of Mabini, which stood at 43,552 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Tagnanan moving from 5,530 residents to 5,805 residents, an intercensal change of +5.0%. The trajectory indicates a growing community. The Philippine Statistics Authority classifies Barangay Tagnanan as urban, reflecting the density and built-up character of the area.

Mabini is a municipality comprising 11 barangays, and serves as the governing unit directly responsible for local services in Barangay Tagnanan, including public health, sanitation, peace and order, and civil registration. Within the wider province of Davao De Oro, which contains 237 barangays across its component cities and municipalities, Barangay Tagnanan ranks 28th by 2020 population. Davao De Oro 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.