Barangay Abaccan

Barangay Abaccan forms part of Sigay, a municipality in Ilocos Sur, and is classified as a very small barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Abaccan had a population of 212. This made it the 7th largest of 7 barangays in Sigay by population, placing it among the smaller barangays of the municipality. Residents of Barangay Abaccan accounted for approximately 8.31% of the total population of Sigay, which stood at 2,552 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Abaccan changed from 254 to 212, a shift of -16.5% over the five-year period. This places the barangay among those with contracting populations in Sigay. The Philippine Statistics Authority classifies Barangay Abaccan as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Sigay is a municipality comprising 7 barangays, and serves as the governing unit directly responsible for local services in Barangay Abaccan, including public health, sanitation, peace and order, and civil registration. Within the wider province of Ilocos Sur, which contains 768 barangays across its component cities and municipalities, Barangay Abaccan ranks 750th by 2020 population. Ilocos Sur 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 Abaccan 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.