Barangay San Isidro (Pob.)

Classified as a small barangay, Barangay San Isidro (Pob.) is one of the administrative divisions of Nabua in Camarines Sur, Bicol Region, Philippines.

According to the 2020 Philippine census, Barangay San Isidro (Pob.) had a population of 534. This made it the 41st largest of 42 barangays in Nabua by population, placing it among the smaller barangays of the municipality. Residents of Barangay San Isidro (Pob.) accounted for approximately 0.62% of the total population of Nabua, which stood at 86,490 in the same census year.

The barangay recorded 704 residents in the 2015 intercensal count and 534 residents in the 2020 Census — a net change of -24.1%, consistent with a contracting settlement. Barangay San Isidro (Pob.) is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Nabua is a municipality comprising 42 barangays, and serves as the governing unit directly responsible for local services in Barangay San Isidro (Pob.), including public health, sanitation, peace and order, and civil registration. Within the wider province of Camarines Sur, which contains 1,063 barangays across its component cities and municipalities, Barangay San Isidro (Pob.) ranks 965th by 2020 population. Camarines Sur 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.