Barangay Marana I

Situated in City of Ilagan, Isabela, Barangay Marana I is one of 91 barangays that make up the city within Cagayan Valley.

According to the 2020 Census of Population and Housing conducted by the Philippine Statistics Authority, Barangay Marana I had a population of 1,746. This made it the 28th largest of 91 barangays in City of Ilagan by population, placing it in the upper half of the city. Residents of Barangay Marana I accounted for approximately 1.10% of the total population of City of Ilagan, which stood at 158,218 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Marana I moving from 1,551 residents to 1,746 residents, an intercensal change of +12.6%. The trajectory indicates a growing community. The Philippine Statistics Authority classifies Barangay Marana I as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

City of Ilagan is a city comprising 91 barangays, and serves as the governing unit directly responsible for local services in Barangay Marana I, 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 Marana I ranks 338th 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.