Barangay Diaz

Situated in Gandara, Samar, Barangay Diaz is one of 69 barangays that make up the municipality within Eastern Visayas.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Diaz had a population of 655. This made it the 15th largest of 69 barangays in Gandara by population, placing it in the upper half of the municipality. Residents of Barangay Diaz accounted for approximately 1.86% of the total population of Gandara, which stood at 35,242 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Diaz changed from 631 to 655, a shift of +3.8% over the five-year period. This places the barangay among those with growing populations in Gandara. 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.

Gandara is a municipality comprising 69 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 Samar, which contains 951 barangays across its component cities and municipalities, Barangay Diaz ranks 398th by 2020 population. Samar is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Like every Philippine barangay, Barangay Diaz is led by an elected Punong Barangay (barangay captain) supported by seven Sangguniang Barangay members (kagawads), an SK Chairperson, a Barangay Secretary, and a Barangay Treasurer. The next Barangay and Sangguniang Kabataan Elections (BSKE) are scheduled for Monday, November 2, 2026, with officials serving four-year terms under Republic Act No. 12232.