Barangay Cal-lao

Barangay Cal-lao forms part of Villaviciosa, a municipality in Abra, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay Cal-lao had a population of 940. This made it the 1st largest of 8 barangays in Villaviciosa by population, placing it among the most populous barangays of the municipality. Residents of Barangay Cal-lao accounted for approximately 16.56% of the total population of Villaviciosa, which stood at 5,675 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Cal-lao changed from 929 to 940, a shift of +1.2% over the five-year period. This places the barangay among those with slowly expanding populations in Villaviciosa. Barangay Cal-lao is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Villaviciosa is a municipality comprising 8 barangays, and serves as the governing unit directly responsible for local services in Barangay Cal-lao, including public health, sanitation, peace and order, and civil registration. Within the wider province of Abra, which contains 303 barangays across its component cities and municipalities, Barangay Cal-lao ranks 87th by 2020 population. Abra is classified as a 3rd by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay Cal-lao is governed by an elected Sangguniang Barangay composed of a Punong Barangay and seven kagawads, with the Sangguniang Kabataan representing the youth. The next BSKE, set for Monday, November 2, 2026, will elect officials to four-year terms as provided under Republic Act No. 12232.