Barangay San Agustin Norte

Barangay San Agustin Norte forms part of Agoo, 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 San Agustin Norte had a population of 1,325. This made it the 20th largest of 49 barangays in Agoo by population, placing it in the middle tier of the municipality. Residents of Barangay San Agustin Norte accounted for approximately 2.01% of the total population of Agoo, which stood at 66,028 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Agustin Norte moving from 1,319 residents to 1,325 residents, an intercensal change of +0.5%. The trajectory indicates a slowly expanding community. The Philippine Statistics Authority classifies Barangay San Agustin Norte as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Agoo is a municipality comprising 49 barangays, and serves as the governing unit directly responsible for local services in Barangay San Agustin Norte, 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 San Agustin Norte ranks 238th 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 San Agustin Norte 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.