Barangay San Carlos

Situated in Benito Soliven, Isabela, Barangay San Carlos is one of 29 barangays that make up the municipality within Cagayan Valley.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay San Carlos had a population of 439. This made it the 25th largest of 29 barangays in Benito Soliven by population, placing it among the smaller barangays of the municipality. Residents of Barangay San Carlos accounted for approximately 1.48% of the total population of Benito Soliven, which stood at 29,752 in the same census year.

Census comparisons between 2015 and 2020 show Barangay San Carlos moving from 406 residents to 439 residents, an intercensal change of +8.1%. The trajectory indicates a growing community. The Philippine Statistics Authority classifies Barangay San Carlos as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Benito Soliven is a municipality comprising 29 barangays, and serves as the governing unit directly responsible for local services in Barangay San Carlos, 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 San Carlos ranks 977th 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.

Like every Philippine barangay, Barangay San Carlos is led by an elected Punong Barangay (barangay captain) supported by seven Sangguniang Barangay members (kagawads), an SK Chairperson, a Barangay Secretary, and a Barangay Treasurer. The next Barangay and Sangguniang Kabataan Elections (BSKE) are scheduled for Monday, November 2, 2026, with officials serving four-year terms under Republic Act No. 12232.