Barangay Idao

Barangay Idao forms part of Barbaza, a municipality in Antique, and is classified as a very small barangay.

According to the 2020 Philippine census, Barangay Idao had a population of 243. This made it the 26th largest of 39 barangays in Barbaza by population, placing it in the middle tier of the municipality. Residents of Barangay Idao accounted for approximately 1.04% of the total population of Barbaza, which stood at 23,359 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Idao moving from 242 residents to 243 residents, an intercensal change of +0.4%. The trajectory indicates a slowly expanding community. Barangay Idao is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Barbaza is a municipality comprising 39 barangays, and serves as the governing unit directly responsible for local services in Barangay Idao, including public health, sanitation, peace and order, and civil registration. Within the wider province of Antique, which contains 590 barangays across its component cities and municipalities, Barangay Idao ranks 545th by 2020 population. Antique is classified as a 2nd by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay Idao 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.