Barangay Balug

Situated in Tumauini, Isabela, Barangay Balug is one of 46 barangays that make up the municipality within Cagayan Valley.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Balug had a population of 1,563. This made it the 19th largest of 46 barangays in Tumauini by population, placing it in the middle tier of the municipality. Residents of Barangay Balug accounted for approximately 2.21% of the total population of Tumauini, which stood at 70,743 in the same census year.

The barangay recorded 1,202 residents in the 2015 intercensal count and 1,563 residents in the 2020 Census — a net change of +30.0%, consistent with a growing settlement. The Philippine Statistics Authority classifies Barangay Balug as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Tumauini is a municipality comprising 46 barangays, and serves as the governing unit directly responsible for local services in Barangay Balug, including public health, sanitation, peace and order, and civil registration. Within the wider province of Isabela, which contains 1,055 barangays across its component cities and municipalities, Barangay Balug ranks 398th by 2020 population. Isabela is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay Balug is governed by an elected Sangguniang Barangay composed of a Punong Barangay and seven kagawads, with the Sangguniang Kabataan representing the youth. The next BSKE, set for Monday, November 2, 2026, will elect officials to four-year terms as provided under Republic Act No. 12232.