Barangay Casilan

Barangay Casilan forms part of Umingan, a municipality in Pangasinan, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay Casilan had a population of 573. This made it the 55th largest of 58 barangays in Umingan by population, placing it among the smaller barangays of the municipality. Residents of Barangay Casilan accounted for approximately 0.74% of the total population of Umingan, which stood at 77,074 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Casilan moving from 607 residents to 573 residents, an intercensal change of -5.6%. The trajectory indicates a contracting community. Barangay Casilan is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Umingan is a municipality comprising 58 barangays, and serves as the governing unit directly responsible for local services in Barangay Casilan, 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 Casilan ranks 1319th 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.

Like every Philippine barangay, Barangay Casilan 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.