Barangay Antagan II

Situated in Tumauini, Isabela, Barangay Antagan II 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 Antagan II had a population of 1,562. This made it the 20th largest of 46 barangays in Tumauini by population, placing it in the middle tier of the municipality. Residents of Barangay Antagan II accounted for approximately 2.21% of the total population of Tumauini, which stood at 70,743 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Antagan II changed from 1,537 to 1,562, a shift of +1.6% over the five-year period. This places the barangay among those with slowly expanding populations in Tumauini. The Philippine Statistics Authority classifies Barangay Antagan II 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 Antagan II, 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 Antagan II ranks 399th 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 Antagan II 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.