Barangay Kalilayan Ilaya

Situated in Unisan, Quezon, Barangay Kalilayan Ilaya is one of 36 barangays that make up the municipality within CALABARZON.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Kalilayan Ilaya had a population of 1,005. This made it the 5th largest of 36 barangays in Unisan by population, placing it in the upper half of the municipality. Residents of Barangay Kalilayan Ilaya accounted for approximately 3.95% of the total population of Unisan, which stood at 25,448 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Kalilayan Ilaya moving from 1,246 residents to 1,005 residents, an intercensal change of -19.3%. The trajectory indicates a contracting community. The Philippine Statistics Authority classifies Barangay Kalilayan Ilaya as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Unisan is a municipality comprising 36 barangays, and serves as the governing unit directly responsible for local services in Barangay Kalilayan Ilaya, including public health, sanitation, peace and order, and civil registration. Within the wider province of Quezon, which contains 1,242 barangays across its component cities and municipalities, Barangay Kalilayan Ilaya ranks 599th by 2020 population. Quezon 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.