Barangay Calangcuasan

Barangay Calangcuasan forms part of Casiguran, a municipality in Aurora, and is classified as a small barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Calangcuasan had a population of 1,150. This made it the 8th largest of 24 barangays in Casiguran by population, placing it in the upper half of the municipality. Residents of Barangay Calangcuasan accounted for approximately 4.33% of the total population of Casiguran, which stood at 26,564 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Calangcuasan changed from 1,104 to 1,150, a shift of +4.2% over the five-year period. This places the barangay among those with growing populations in Casiguran. The Philippine Statistics Authority classifies Barangay Calangcuasan as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Casiguran is a municipality comprising 24 barangays, and serves as the governing unit directly responsible for local services in Barangay Calangcuasan, including public health, sanitation, peace and order, and civil registration. Within the wider province of Aurora, which contains 151 barangays across its component cities and municipalities, Barangay Calangcuasan ranks 77th by 2020 population. Aurora is classified as a 3rd by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Like every Philippine barangay, Barangay Calangcuasan 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.