Barangay Lambayan

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

According to the 2020 Philippine census, Barangay Lambayan had a population of 1,756. This made it the 9th largest of 15 barangays in Mapandan by population, placing it in the middle tier of the municipality. Residents of Barangay Lambayan accounted for approximately 4.61% of the total population of Mapandan, which stood at 38,058 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Lambayan moving from 1,616 residents to 1,756 residents, an intercensal change of +8.7%. The trajectory indicates a growing community. Barangay Lambayan is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Mapandan is a municipality comprising 15 barangays, and serves as the governing unit directly responsible for local services in Barangay Lambayan, 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 Lambayan ranks 758th 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 Lambayan 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.