Barangay San Isidro

Barangay San Isidro forms part of Claveria, a municipality in Masbate, and is classified as a small barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay San Isidro had a population of 1,562. This made it the 12th largest of 22 barangays in Claveria by population, placing it in the middle tier of the municipality. Residents of Barangay San Isidro accounted for approximately 3.71% of the total population of Claveria, which stood at 42,142 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Isidro moving from 1,489 residents to 1,562 residents, an intercensal change of +4.9%. The trajectory indicates a growing 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.

Claveria is a municipality comprising 22 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 Masbate, which contains 550 barangays across its component cities and municipalities, Barangay San Isidro ranks 215th by 2020 population. Masbate is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Like every Philippine barangay, Barangay San Isidro 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.