Quirino is predominantly Roman Catholic with 54 percent adherence while Evangelicals and United Methodist Church serve as significant minorities with up to 20% of the population.
Quirino Province acquired its juridical personality as a result of the division of the province of the Nueva Vizcaya and Isabela on June 18, 1966 under R.A. 4734. It was named in honor of the then President Elpidio A. Quirino
The province of Quirino was formally established on February 10, 1971 upon assumption to office of the first elected provincial and municipal officials headed by Dionisio A. Sarandi as Provincial Governor.
Eventually, on February 25,1983, Batas Pambansa Blg. 345 was enacted, creating the municipality of Nagtipunan, a division of the Municipality of Maddela.
Part of the province’s comparative advantage is its accessibility to Aurora (Region 4), which makes it a viable entry/exit through the coastal area of Aurora.
Long before its creation, Quirino was the forest region of the Province of Nueva Vizcaya inhabited by tribal groups popularly known as the Negrito or Pugots. These tribal groups roamed the hinterland and built their huts in the heart of the jungle area.