Barangay Poblacion East

Classified as a mid-sized barangay, Barangay Poblacion East is one of the administrative divisions of Rosario in La Union, Ilocos Region, Philippines.

According to the 2020 Philippine census, Barangay Poblacion East had a population of 2,489. This made it the 9th largest of 33 barangays in Rosario by population, placing it in the upper half of the municipality. Residents of Barangay Poblacion East accounted for approximately 4.13% of the total population of Rosario, which stood at 60,278 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Poblacion East moving from 2,180 residents to 2,489 residents, an intercensal change of +14.2%. The trajectory indicates a growing community. Barangay Poblacion East is officially classified as urban, reflecting the density and built-up character of the area.

Rosario is a municipality comprising 33 barangays, and serves as the governing unit directly responsible for local services in Barangay Poblacion East, 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 Poblacion East ranks 62nd 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.