Barangay Sandiat West

Barangay Sandiat West forms part of San Manuel, a municipality in Isabela, and is classified as a mid-sized barangay.

According to the 2020 Philippine census, Barangay Sandiat West had a population of 2,305. This made it the 6th largest of 19 barangays in San Manuel by population, placing it in the upper half of the municipality. Residents of Barangay Sandiat West accounted for approximately 6.76% of the total population of San Manuel, which stood at 34,085 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Sandiat West moving from 2,165 residents to 2,305 residents, an intercensal change of +6.5%. The trajectory indicates a growing community. Barangay Sandiat West is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

San Manuel is a municipality comprising 19 barangays, and serves as the governing unit directly responsible for local services in Barangay Sandiat West, 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 Sandiat West ranks 202nd 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.

Barangay Sandiat West 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.