Barangay Poblacion I

Classified as a small barangay, Barangay Poblacion I is one of the administrative divisions of Balangiga in Eastern Samar, Eastern Visayas, Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Poblacion I had a population of 1,878. This made it the 4th largest of 13 barangays in Balangiga by population, placing it in the upper half of the municipality. Residents of Barangay Poblacion I accounted for approximately 13.10% of the total population of Balangiga, which stood at 14,341 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Poblacion I changed from 1,823 to 1,878, a shift of +3.0% over the five-year period. This places the barangay among those with growing populations in Balangiga. The Philippine Statistics Authority classifies Barangay Poblacion I as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Balangiga is a municipality comprising 13 barangays, and serves as the governing unit directly responsible for local services in Barangay Poblacion I, including public health, sanitation, peace and order, and civil registration. Within the wider province of Eastern Samar, which contains 597 barangays across its component cities and municipalities, Barangay Poblacion I ranks 42nd by 2020 population. Eastern Samar is classified as a 2nd 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.