Barangay Jamoog

Barangay Jamoog forms part of Rosario, a municipality in Northern Samar, and is classified as a small barangay.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Jamoog had a population of 540. This made it the 9th largest of 11 barangays in Rosario by population, placing it among the smaller barangays of the municipality. Residents of Barangay Jamoog accounted for approximately 4.93% of the total population of Rosario, which stood at 10,949 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Jamoog moving from 553 residents to 540 residents, an intercensal change of -2.4%. The trajectory indicates a contracting community. The Philippine Statistics Authority classifies Barangay Jamoog as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Rosario is a municipality comprising 11 barangays, and serves as the governing unit directly responsible for local services in Barangay Jamoog, including public health, sanitation, peace and order, and civil registration. Within the wider province of Northern Samar, which contains 569 barangays across its component cities and municipalities, Barangay Jamoog ranks 397th by 2020 population. Northern Samar is classified as a 2nd by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay Jamoog 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.