Barangay Poblacion West

Barangay Poblacion West forms part of Santo Tomas, a municipality in Pangasinan, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay Poblacion West had a population of 585. This made it the 10th largest of 10 barangays in Santo Tomas by population, placing it among the smaller barangays of the municipality. Residents of Barangay Poblacion West accounted for approximately 3.93% of the total population of Santo Tomas, which stood at 14,878 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Poblacion West changed from 606 to 585, a shift of -3.5% over the five-year period. This places the barangay among those with contracting populations in Santo Tomas. Barangay Poblacion West is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Santo Tomas is a municipality comprising 10 barangays, and serves as the governing unit directly responsible for local services in Barangay Poblacion West, including public health, sanitation, peace and order, and civil registration. Within the wider province of Pangasinan, which contains 1,364 barangays across its component cities and municipalities, Barangay Poblacion West ranks 1314th by 2020 population. Pangasinan is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

The barangay's legislative and executive affairs are handled by a Punong Barangay and the Sangguniang Barangay, elected nationwide during the Barangay and SK Elections. The next BSKE is scheduled for Monday, November 2, 2026, following the synchronized election schedule set by COMELEC Resolution No. 11191.