Barangay Casilagan

Barangay Casilagan forms part of Rizal, a municipality in Nueva Ecija, and is classified as a small barangay.

According to the 2020 Philippine census, Barangay Casilagan had a population of 846. This made it the 24th largest of 26 barangays in Rizal by population, placing it among the smaller barangays of the municipality. Residents of Barangay Casilagan accounted for approximately 1.21% of the total population of Rizal, which stood at 70,196 in the same census year.

Between the 2015 and 2020 censuses, the population of Barangay Casilagan changed from 776 to 846, a shift of +9.0% over the five-year period. This places the barangay among those with growing populations in Rizal. Barangay Casilagan is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Rizal is a municipality comprising 26 barangays, and serves as the governing unit directly responsible for local services in Barangay Casilagan, including public health, sanitation, peace and order, and civil registration. Within the wider province of Nueva Ecija, which contains 849 barangays across its component cities and municipalities, Barangay Casilagan ranks 759th by 2020 population. Nueva Ecija is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay Casilagan 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.