Barangay Tunggui

Barangay Tunggui forms part of Tumauini, a municipality in Isabela, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay Tunggui had a population of 594. This made it the 43rd largest of 46 barangays in Tumauini by population, placing it among the smaller barangays of the municipality. Residents of Barangay Tunggui accounted for approximately 0.84% of the total population of Tumauini, which stood at 70,743 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Tunggui moving from 737 residents to 594 residents, an intercensal change of -19.4%. The trajectory indicates a contracting community. Barangay Tunggui is officially classified 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 Tunggui, 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 Tunggui ranks 887th 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.

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.