Barangay San Blas

Classified as a mid-sized barangay, Barangay San Blas is one of the administrative divisions of Villasis in Pangasinan, Ilocos Region, Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay San Blas had a population of 2,971. This made it the 10th largest of 21 barangays in Villasis by population, placing it in the middle tier of the municipality. Residents of Barangay San Blas accounted for approximately 4.57% of the total population of Villasis, which stood at 65,047 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Blas moving from 3,094 residents to 2,971 residents, an intercensal change of -4.0%. The trajectory indicates a contracting community. The Philippine Statistics Authority classifies Barangay San Blas as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Villasis is a municipality comprising 21 barangays, and serves as the governing unit directly responsible for local services in Barangay San Blas, 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 San Blas ranks 330th 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.

Barangay San Blas 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.