Barangay Naguilian

Classified as a small barangay, Barangay Naguilian is one of the administrative divisions of Lal-Lo in Cagayan, Cagayan Valley, Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Naguilian had a population of 1,580. This made it the 9th largest of 35 barangays in Lal-Lo by population, placing it in the upper half of the municipality. Residents of Barangay Naguilian accounted for approximately 3.24% of the total population of Lal-Lo, which stood at 48,733 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Naguilian moving from 1,411 residents to 1,580 residents, an intercensal change of +12.0%. The trajectory indicates a growing community. The Philippine Statistics Authority classifies Barangay Naguilian as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Lal-Lo is a municipality comprising 35 barangays, and serves as the governing unit directly responsible for local services in Barangay Naguilian, including public health, sanitation, peace and order, and civil registration. Within the wider province of Cagayan, which contains 820 barangays across its component cities and municipalities, Barangay Naguilian ranks 289th by 2020 population. Cagayan is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay Naguilian 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.