Barangay Villasis

Barangay Villasis forms part of City of Santiago, a city in Isabela, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay Villasis had a population of 1,435. This made it the 30th largest of 37 barangays in City of Santiago by population, placing it among the smaller barangays of the city. Residents of Barangay Villasis accounted for approximately 0.97% of the total population of City of Santiago, which stood at 148,580 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Villasis moving from 1,026 residents to 1,435 residents, an intercensal change of +39.9%. The trajectory indicates a growing community. Barangay Villasis is officially classified as urban, reflecting the density and built-up character of the area.

City of Santiago is a city comprising 37 barangays, and serves as the governing unit directly responsible for local services in Barangay Villasis, 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 Villasis ranks 443rd 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 Villasis 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.