Barangay Oeste - A

Classified as a small barangay, Barangay Oeste - A is one of the administrative divisions of Tarangnan in Samar, Eastern Visayas, Philippines.

According to the 2020 Philippine census, Barangay Oeste - A had a population of 915. This made it the 10th largest of 41 barangays in Tarangnan by population, placing it in the upper half of the municipality. Residents of Barangay Oeste - A accounted for approximately 3.56% of the total population of Tarangnan, which stood at 25,713 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Oeste - A changed from 828 to 915, a shift of +10.5% over the five-year period. This places the barangay among those with growing populations in Tarangnan. Barangay Oeste - A is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Tarangnan is a municipality comprising 41 barangays, and serves as the governing unit directly responsible for local services in Barangay Oeste - A, including public health, sanitation, peace and order, and civil registration. Within the wider province of Samar, which contains 951 barangays across its component cities and municipalities, Barangay Oeste - A ranks 267th by 2020 population. Samar 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.