Barangay Mayana

Barangay Mayana forms part of Guiuan, a municipality in Eastern Samar, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay Mayana had a population of 585. This made it the 32nd largest of 60 barangays in Guiuan by population, placing it in the middle tier of the municipality. Residents of Barangay Mayana accounted for approximately 1.10% of the total population of Guiuan, which stood at 53,361 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Mayana changed from 577 to 585, a shift of +1.4% over the five-year period. This places the barangay among those with slowly expanding populations in Guiuan. Barangay Mayana is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Guiuan is a municipality comprising 60 barangays, and serves as the governing unit directly responsible for local services in Barangay Mayana, including public health, sanitation, peace and order, and civil registration. Within the wider province of Eastern Samar, which contains 597 barangays across its component cities and municipalities, Barangay Mayana ranks 308th by 2020 population. Eastern Samar is classified as a 2nd by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Like every Philippine barangay, Barangay Mayana 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.