Barangay San Isidro East

Classified as a small barangay, Barangay San Isidro East is one of the administrative divisions of Santa Maria in Isabela, Cagayan Valley, Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay San Isidro East had a population of 1,163. This made it the 9th largest of 20 barangays in Santa Maria by population, placing it in the middle tier of the municipality. Residents of Barangay San Isidro East accounted for approximately 4.52% of the total population of Santa Maria, which stood at 25,758 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Isidro East moving from 1,160 residents to 1,163 residents, an intercensal change of +0.3%. The trajectory indicates a slowly expanding community. The Philippine Statistics Authority classifies Barangay San Isidro East as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Santa Maria is a municipality comprising 20 barangays, and serves as the governing unit directly responsible for local services in Barangay San Isidro East, 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 East ranks 556th 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 East 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.