Barangay Santa Barbara (Pob.)

Situated in Agoo, La Union, Barangay Santa Barbara (Pob.) is one of 49 barangays that make up the municipality within Ilocos Region.

According to the 2020 Philippine census, Barangay Santa Barbara (Pob.) had a population of 1,745. This made it the 12th largest of 49 barangays in Agoo by population, placing it in the upper half of the municipality. Residents of Barangay Santa Barbara (Pob.) accounted for approximately 2.64% of the total population of Agoo, which stood at 66,028 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Santa Barbara (Pob.) moving from 1,907 residents to 1,745 residents, an intercensal change of -8.5%. The trajectory indicates a contracting community. Barangay Santa Barbara (Pob.) is officially classified as urban, reflecting the density and built-up character of the area.

Agoo is a municipality comprising 49 barangays, and serves as the governing unit directly responsible for local services in Barangay Santa Barbara (Pob.), 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 Santa Barbara (Pob.) ranks 135th 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.