Barangay Pag-Oring Viejo

Situated in Libmanan, Camarines Sur, Barangay Pag-Oring Viejo is one of 75 barangays that make up the municipality within Bicol Region.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Pag-Oring Viejo had a population of 496. This made it the 72nd largest of 75 barangays in Libmanan by population, placing it among the smaller barangays of the municipality. Residents of Barangay Pag-Oring Viejo accounted for approximately 0.44% of the total population of Libmanan, which stood at 112,994 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Pag-Oring Viejo moving from 702 residents to 496 residents, an intercensal change of -29.3%. The trajectory indicates a contracting community. The Philippine Statistics Authority classifies Barangay Pag-Oring Viejo as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Libmanan is a municipality comprising 75 barangays, and serves as the governing unit directly responsible for local services in Barangay Pag-Oring Viejo, including public health, sanitation, peace and order, and civil registration. Within the wider province of Camarines Sur, which contains 1,063 barangays across its component cities and municipalities, Barangay Pag-Oring Viejo ranks 986th by 2020 population. Camarines Sur 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.