Barangay San Isidro

Situated in Santa Magdalena, Sorsogon, Barangay San Isidro is one of 14 barangays that make up the municipality within Bicol Region.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay San Isidro had a population of 1,581. This made it the 2nd largest of 14 barangays in Santa Magdalena by population, placing it among the most populous barangays of the municipality. Residents of Barangay San Isidro accounted for approximately 9.25% of the total population of Santa Magdalena, which stood at 17,096 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Isidro moving from 1,557 residents to 1,581 residents, an intercensal change of +1.5%. The trajectory indicates a slowly expanding community. The Philippine Statistics Authority classifies Barangay San Isidro as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Santa Magdalena is a municipality comprising 14 barangays, and serves as the governing unit directly responsible for local services in Barangay San Isidro, including public health, sanitation, peace and order, and civil registration. Within the wider province of Sorsogon, which contains 541 barangays across its component cities and municipalities, Barangay San Isidro ranks 184th by 2020 population. Sorsogon is classified as a 2nd by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay San Isidro is governed by an elected Sangguniang Barangay composed of a Punong Barangay and seven kagawads, with the Sangguniang Kabataan representing the youth. The next BSKE, set for Monday, November 2, 2026, will elect officials to four-year terms as provided under Republic Act No. 12232.