Barangay San Pedro

Barangay San Pedro forms part of Guiuan, a municipality in Eastern Samar, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay San Pedro had a population of 529. This made it the 38th largest of 60 barangays in Guiuan by population, placing it in the middle tier of the municipality. Residents of Barangay San Pedro accounted for approximately 0.99% of the total population of Guiuan, which stood at 53,361 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Pedro moving from 567 residents to 529 residents, an intercensal change of -6.7%. The trajectory indicates a contracting community. Barangay San Pedro is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Guiuan is a municipality comprising 60 barangays, and serves as the governing unit directly responsible for local services in Barangay San Pedro, 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 San Pedro ranks 337th 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.

Like every Philippine barangay, Barangay San Pedro is led by an elected Punong Barangay (barangay captain) supported by seven Sangguniang Barangay members (kagawads), an SK Chairperson, a Barangay Secretary, and a Barangay Treasurer. The next Barangay and Sangguniang Kabataan Elections (BSKE) are scheduled for Monday, November 2, 2026, with officials serving four-year terms under Republic Act No. 12232.