Barangay Calingayan

Barangay Calingayan is a very small barangay in the municipality of Sinait, located in the province of Ilocos Sur, in the Ilocos Region region of the Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Calingayan had a population of 271. This made it the 43rd largest of 44 barangays in Sinait by population, placing it among the smaller barangays of the municipality. Residents of Barangay Calingayan accounted for approximately 1.04% of the total population of Sinait, which stood at 25,998 in the same census year.

The barangay recorded 270 residents in the 2015 intercensal count and 271 residents in the 2020 Census — a net change of +0.4%, consistent with a slowly expanding settlement. The Philippine Statistics Authority classifies Barangay Calingayan as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Sinait is a municipality comprising 44 barangays, and serves as the governing unit directly responsible for local services in Barangay Calingayan, including public health, sanitation, peace and order, and civil registration. Within the wider province of Ilocos Sur, which contains 768 barangays across its component cities and municipalities, Barangay Calingayan ranks 728th by 2020 population. Ilocos Sur 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.