Barangay Mada-o

Situated in Kawayan, Biliran, Barangay Mada-o is one of 20 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 Mada-o had a population of 1,129. This made it the 7th largest of 20 barangays in Kawayan by population, placing it in the middle tier of the municipality. Residents of Barangay Mada-o accounted for approximately 5.52% of the total population of Kawayan, which stood at 20,455 in the same census year.

The barangay recorded 1,132 residents in the 2015 intercensal count and 1,129 residents in the 2020 Census — a net change of -0.3%, consistent with a broadly stable settlement. The Philippine Statistics Authority classifies Barangay Mada-o as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Kawayan is a municipality comprising 20 barangays, and serves as the governing unit directly responsible for local services in Barangay Mada-o, including public health, sanitation, peace and order, and civil registration. Within the wider province of Biliran, which contains 132 barangays across its component cities and municipalities, Barangay Mada-o ranks 58th by 2020 population. Biliran is classified as a 4th by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Like every Philippine barangay, Barangay Mada-o 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.