Barangay San Isidro

Classified as a mid-sized barangay, Barangay San Isidro is one of the administrative divisions of City of Naga in Camarines Sur, Bicol Region, Philippines.

According to the 2020 Philippine census, Barangay San Isidro had a population of 3,432. This made it the 19th largest of 27 barangays in City of Naga by population, placing it in the middle tier of the city. Residents of Barangay San Isidro accounted for approximately 1.64% of the total population of City of Naga, which stood at 209,170 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay San Isidro changed from 2,768 to 3,432, a shift of +24.0% over the five-year period. This places the barangay among those with growing populations in City of Naga. Barangay San Isidro is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

City of Naga is a city comprising 27 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 Camarines Sur, which contains 1,063 barangays across its component cities and municipalities, Barangay San Isidro ranks 120th 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.

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.