Barangay San Isidro

Barangay San Isidro forms part of Pamplona, a municipality in Camarines Sur, and is classified as a mid-sized barangay.

According to the 2020 Philippine census, Barangay San Isidro had a population of 2,525. This made it the 6th largest of 17 barangays in Pamplona by population, placing it in the upper half of the municipality. Residents of Barangay San Isidro accounted for approximately 6.42% of the total population of Pamplona, which stood at 39,333 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay San Isidro changed from 2,317 to 2,525, a shift of +9.0% over the five-year period. This places the barangay among those with growing populations in Pamplona. Barangay San Isidro is officially classified as urban, reflecting the density and built-up character of the area.

Pamplona is a municipality comprising 17 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 234th 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.

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.