Barangay Guinosayan

Situated in Calauag, Quezon, Barangay Guinosayan is one of 81 barangays that make up the municipality within CALABARZON.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Guinosayan had a population of 305. This made it the 71st largest of 81 barangays in Calauag by population, placing it among the smaller barangays of the municipality. Residents of Barangay Guinosayan accounted for approximately 0.42% of the total population of Calauag, which stood at 71,809 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Guinosayan changed from 316 to 305, a shift of -3.5% over the five-year period. This places the barangay among those with contracting populations in Calauag. The Philippine Statistics Authority classifies Barangay Guinosayan as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Calauag is a municipality comprising 81 barangays, and serves as the governing unit directly responsible for local services in Barangay Guinosayan, 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 Guinosayan ranks 1082nd 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.