Barangay Ragan Sur (Pob.)

Barangay Ragan Sur (Pob.) is a mid-sized barangay in the municipality of Delfin Albano, located in the province of Isabela, in the Cagayan Valley region of the Philippines.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Ragan Sur (Pob.) had a population of 2,047. This made it the 2nd largest of 29 barangays in Delfin Albano by population, placing it among the most populous barangays of the municipality. Residents of Barangay Ragan Sur (Pob.) accounted for approximately 6.84% of the total population of Delfin Albano, which stood at 29,928 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Ragan Sur (Pob.) moving from 1,809 residents to 2,047 residents, an intercensal change of +13.2%. The trajectory indicates a growing community. The Philippine Statistics Authority classifies Barangay Ragan Sur (Pob.) as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Delfin Albano is a municipality comprising 29 barangays, and serves as the governing unit directly responsible for local services in Barangay Ragan Sur (Pob.), including public health, sanitation, peace and order, and civil registration. Within the wider province of Isabela, which contains 1,055 barangays across its component cities and municipalities, Barangay Ragan Sur (Pob.) ranks 257th by 2020 population. Isabela 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.