Barangay Tanduyan

Situated in Ajuy, Iloilo, Barangay Tanduyan is one of 34 barangays that make up the municipality within Western Visayas.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Tanduyan had a population of 741. This made it the 26th largest of 34 barangays in Ajuy by population, placing it among the smaller barangays of the municipality. Residents of Barangay Tanduyan accounted for approximately 1.39% of the total population of Ajuy, which stood at 53,462 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Tanduyan moving from 780 residents to 741 residents, an intercensal change of -5.0%. The trajectory indicates a contracting community. The Philippine Statistics Authority classifies Barangay Tanduyan as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Ajuy is a municipality comprising 34 barangays, and serves as the governing unit directly responsible for local services in Barangay Tanduyan, including public health, sanitation, peace and order, and civil registration. Within the wider province of Iloilo, which contains 1,901 barangays across its component cities and municipalities, Barangay Tanduyan ranks 1020th by 2020 population. Iloilo is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

The barangay's legislative and executive affairs are handled by a Punong Barangay and the Sangguniang Barangay, elected nationwide during the Barangay and SK Elections. The next BSKE is scheduled for Monday, November 2, 2026, following the synchronized election schedule set by COMELEC Resolution No. 11191.