Barangay Union Kalinga

Situated in Luna, Isabela, Barangay Union Kalinga is one of 19 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 Union Kalinga had a population of 469. This made it the 17th largest of 19 barangays in Luna by population, placing it among the smaller barangays of the municipality. Residents of Barangay Union Kalinga accounted for approximately 2.27% of the total population of Luna, which stood at 20,697 in the same census year.

The barangay recorded 463 residents in the 2015 intercensal count and 469 residents in the 2020 Census — a net change of +1.3%, consistent with a slowly expanding settlement. The Philippine Statistics Authority classifies Barangay Union Kalinga as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Luna is a municipality comprising 19 barangays, and serves as the governing unit directly responsible for local services in Barangay Union Kalinga, 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 Union Kalinga ranks 958th 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.