Barangay Rizal East (Pob.)

Barangay Rizal East (Pob.) forms part of San Isidro, a municipality in Isabela, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay Rizal East (Pob.) had a population of 1,854. This made it the 8th largest of 13 barangays in San Isidro by population, placing it in the middle tier of the municipality. Residents of Barangay Rizal East (Pob.) accounted for approximately 6.86% of the total population of San Isidro, which stood at 27,044 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Rizal East (Pob.) changed from 1,948 to 1,854, a shift of -4.8% over the five-year period. This places the barangay among those with contracting populations in San Isidro. Barangay Rizal East (Pob.) is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

San Isidro is a municipality comprising 13 barangays, and serves as the governing unit directly responsible for local services in Barangay Rizal East (Pob.), including public health, sanitation, peace and order, and civil registration. Within the wider province of Isabela, which contains 1,055 barangays across its component cities and municipalities, Barangay Rizal East (Pob.) ranks 301st by 2020 population. Isabela 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 Rizal East (Pob.) 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.