Barangay Luzong Sur

Barangay Luzong Sur forms part of Bangar, a municipality in La Union, and is classified as a small barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Luzong Sur had a population of 1,136. This made it the 15th largest of 33 barangays in Bangar by population, placing it in the middle tier of the municipality. Residents of Barangay Luzong Sur accounted for approximately 2.99% of the total population of Bangar, which stood at 38,041 in the same census year.

The barangay recorded 989 residents in the 2015 intercensal count and 1,136 residents in the 2020 Census — a net change of +14.9%, consistent with a growing settlement. The Philippine Statistics Authority classifies Barangay Luzong Sur as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Bangar is a municipality comprising 33 barangays, and serves as the governing unit directly responsible for local services in Barangay Luzong Sur, 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 Luzong Sur ranks 304th 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.

Like every Philippine barangay, Barangay Luzong Sur is led by an elected Punong Barangay (barangay captain) supported by seven Sangguniang Barangay members (kagawads), an SK Chairperson, a Barangay Secretary, and a Barangay Treasurer. The next Barangay and Sangguniang Kabataan Elections (BSKE) are scheduled for Monday, November 2, 2026, with officials serving four-year terms under Republic Act No. 12232.