Barangay Napaccu Grande

Barangay Napaccu Grande forms part of Reina Mercedes, a municipality in Isabela, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay Napaccu Grande had a population of 1,247. This made it the 10th largest of 20 barangays in Reina Mercedes by population, placing it in the middle tier of the municipality. Residents of Barangay Napaccu Grande accounted for approximately 4.47% of the total population of Reina Mercedes, which stood at 27,900 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Napaccu Grande moving from 1,167 residents to 1,247 residents, an intercensal change of +6.9%. The trajectory indicates a growing community. Barangay Napaccu Grande is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Reina Mercedes is a municipality comprising 20 barangays, and serves as the governing unit directly responsible for local services in Barangay Napaccu Grande, 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 Napaccu Grande ranks 522nd 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 Napaccu Grande 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.