Barangay Cogorin Ilaya

Barangay Cogorin Ilaya forms part of Lopez, a municipality in Quezon, and is classified as a small barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Cogorin Ilaya had a population of 759. This made it the 39th largest of 95 barangays in Lopez by population, placing it in the middle tier of the municipality. Residents of Barangay Cogorin Ilaya accounted for approximately 0.80% of the total population of Lopez, which stood at 94,657 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Cogorin Ilaya moving from 773 residents to 759 residents, an intercensal change of -1.8%. The trajectory indicates a broadly stable community. The Philippine Statistics Authority classifies Barangay Cogorin Ilaya as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Lopez is a municipality comprising 95 barangays, and serves as the governing unit directly responsible for local services in Barangay Cogorin 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 Cogorin Ilaya ranks 746th 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.