Barangay Arnap

Barangay Arnap forms part of Cabugao, a municipality in Ilocos Sur, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay Arnap had a population of 1,310. This made it the 12th largest of 33 barangays in Cabugao by population, placing it in the middle tier of the municipality. Residents of Barangay Arnap accounted for approximately 3.37% of the total population of Cabugao, which stood at 38,884 in the same census year.

The barangay recorded 1,242 residents in the 2015 intercensal count and 1,310 residents in the 2020 Census — a net change of +5.5%, consistent with a growing settlement. Barangay Arnap is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Cabugao is a municipality comprising 33 barangays, and serves as the governing unit directly responsible for local services in Barangay Arnap, including public health, sanitation, peace and order, and civil registration. Within the wider province of Ilocos Sur, which contains 768 barangays across its component cities and municipalities, Barangay Arnap ranks 149th by 2020 population. Ilocos Sur 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.