Barangay Union

Situated in Santa Rita, Samar, Barangay Union is one of 38 barangays that make up the municipality within Eastern Visayas.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Union had a population of 0. This made it the 38th largest of 38 barangays in Santa Rita by population, placing it among the smaller barangays of the municipality.

The Philippine Statistics Authority classifies Barangay Union as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Santa Rita is a municipality comprising 38 barangays, and serves as the governing unit directly responsible for local services in Barangay Union, 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 Union ranks 951st 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.