Barangay San Isidro

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

According to the 2020 Philippine census, Barangay San Isidro had a population of 1,183. This made it the 15th largest of 42 barangays in Jones by population, placing it in the middle tier of the municipality. Residents of Barangay San Isidro accounted for approximately 2.59% of the total population of Jones, which stood at 45,628 in the same census year.

The barangay recorded 1,145 residents in the 2015 intercensal count and 1,183 residents in the 2020 Census — a net change of +3.3%, consistent with a growing settlement. Barangay San Isidro is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Jones is a municipality comprising 42 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 Isabela, which contains 1,055 barangays across its component cities and municipalities, Barangay San Isidro ranks 548th 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 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.