Barangay Iraya Sur

Barangay Iraya Sur forms part of San Vicente, a municipality in Camarines Norte, and is classified as a very small barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Iraya Sur had a population of 367. This made it the 9th largest of 9 barangays in San Vicente by population, placing it among the smaller barangays of the municipality. Residents of Barangay Iraya Sur accounted for approximately 2.92% of the total population of San Vicente, which stood at 12,579 in the same census year.

The barangay recorded 318 residents in the 2015 intercensal count and 367 residents in the 2020 Census — a net change of +15.4%, consistent with a growing settlement. The Philippine Statistics Authority classifies Barangay Iraya Sur as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

San Vicente is a municipality comprising 9 barangays, and serves as the governing unit directly responsible for local services in Barangay Iraya Sur, including public health, sanitation, peace and order, and civil registration. Within the wider province of Camarines Norte, which contains 282 barangays across its component cities and municipalities, Barangay Iraya Sur ranks 278th by 2020 population. Camarines Norte is classified as a 2nd 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.