Barangay Batbato

Situated in Alilem, Ilocos Sur, Barangay Batbato is one of 9 barangays that make up the municipality within Ilocos Region.

According to the 2020 Philippine census, Barangay Batbato had a population of 566. This made it the 7th largest of 9 barangays in Alilem by population, placing it in the middle tier of the municipality. Residents of Barangay Batbato accounted for approximately 7.69% of the total population of Alilem, which stood at 7,361 in the same census year.

The barangay recorded 502 residents in the 2015 intercensal count and 566 residents in the 2020 Census — a net change of +12.7%, consistent with a growing settlement. Barangay Batbato is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Alilem is a municipality comprising 9 barangays, and serves as the governing unit directly responsible for local services in Barangay Batbato, 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 Batbato ranks 531st 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.

Barangay Batbato 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.