Barangay Diaz

Barangay Diaz is a small barangay in the municipality of Tubajon, located in the province of Dinagat Islands, in the Caraga region of the Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Diaz had a population of 736. This made it the 5th largest of 9 barangays in Tubajon by population, placing it in the middle tier of the municipality. Residents of Barangay Diaz accounted for approximately 9.07% of the total population of Tubajon, which stood at 8,119 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Diaz moving from 611 residents to 736 residents, an intercensal change of +20.5%. The trajectory indicates a growing community. The Philippine Statistics Authority classifies Barangay Diaz as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Tubajon is a municipality comprising 9 barangays, and serves as the governing unit directly responsible for local services in Barangay Diaz, including public health, sanitation, peace and order, and civil registration. Within the wider province of Dinagat Islands, which contains 100 barangays across its component cities and municipalities, Barangay Diaz ranks 73rd by 2020 population. Dinagat Islands is classified as a 4th 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.