Barangay Cayos

Situated in Dumangas, Iloilo, Barangay Cayos is one of 45 barangays that make up the municipality within Western Visayas.

According to the 2020 Philippine census, Barangay Cayos had a population of 1,557. This made it the 22nd largest of 45 barangays in Dumangas by population, placing it in the middle tier of the municipality. Residents of Barangay Cayos accounted for approximately 2.11% of the total population of Dumangas, which stood at 73,899 in the same census year.

The barangay recorded 1,651 residents in the 2015 intercensal count and 1,557 residents in the 2020 Census — a net change of -5.7%, consistent with a contracting settlement. Barangay Cayos is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Dumangas is a municipality comprising 45 barangays, and serves as the governing unit directly responsible for local services in Barangay Cayos, 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 Cayos ranks 420th 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.