Barangay Casalsagan

Barangay Casalsagan is a small barangay in the municipality of Pototan, located in the province of Iloilo, in the Western Visayas region of the Philippines.

According to the 2020 Philippine census, Barangay Casalsagan had a population of 970. This made it the 37th largest of 50 barangays in Pototan by population, placing it among the smaller barangays of the municipality. Residents of Barangay Casalsagan accounted for approximately 1.24% of the total population of Pototan, which stood at 78,298 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Casalsagan moving from 1,186 residents to 970 residents, an intercensal change of -18.2%. The trajectory indicates a contracting community. Barangay Casalsagan is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Pototan is a municipality comprising 50 barangays, and serves as the governing unit directly responsible for local services in Barangay Casalsagan, 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 Casalsagan ranks 784th 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.

Barangay Casalsagan 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.