Barangay Sinag

Situated in Calauag, Quezon, Barangay Sinag 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 Sinag had a population of 580. This made it the 45th largest of 81 barangays in Calauag by population, placing it in the middle tier of the municipality. Residents of Barangay Sinag accounted for approximately 0.81% of the total population of Calauag, which stood at 71,809 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Sinag moving from 644 residents to 580 residents, an intercensal change of -9.9%. The trajectory indicates a contracting community. The Philippine Statistics Authority classifies Barangay Sinag 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 Sinag, 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 Sinag ranks 873rd 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.

Like every Philippine barangay, Barangay Sinag 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.