Barangay Nangalisan

Situated in Bacnotan, La Union, Barangay Nangalisan is one of 47 barangays that make up the municipality within Ilocos Region.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Nangalisan had a population of 778. This made it the 23rd largest of 47 barangays in Bacnotan by population, placing it in the middle tier of the municipality. Residents of Barangay Nangalisan accounted for approximately 1.75% of the total population of Bacnotan, which stood at 44,388 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Nangalisan moving from 814 residents to 778 residents, an intercensal change of -4.4%. The trajectory indicates a contracting community. The Philippine Statistics Authority classifies Barangay Nangalisan as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Bacnotan is a municipality comprising 47 barangays, and serves as the governing unit directly responsible for local services in Barangay Nangalisan, including public health, sanitation, peace and order, and civil registration. Within the wider province of La Union, which contains 576 barangays across its component cities and municipalities, Barangay Nangalisan ranks 443rd by 2020 population. La Union 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.