Barangay Ansad

Barangay Ansad forms part of San Esteban, a municipality in Ilocos Sur, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay Ansad had a population of 643. This made it the 8th largest of 10 barangays in San Esteban by population, placing it among the smaller barangays of the municipality. Residents of Barangay Ansad accounted for approximately 7.67% of the total population of San Esteban, which stood at 8,381 in the same census year.

The barangay recorded 692 residents in the 2015 intercensal count and 643 residents in the 2020 Census — a net change of -7.1%, consistent with a contracting settlement. Barangay Ansad is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

San Esteban is a municipality comprising 10 barangays, and serves as the governing unit directly responsible for local services in Barangay Ansad, 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 Ansad ranks 471st 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 Ansad 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.