This tribal group is a product of intermarriage between the Ilocanos of the lowlands and a different indigenous cultural community of the Cordillera. They are settled between the mountain ranges of Ilocos and the borders of the Ilocos Provinces. La Union and Pangasinan. They are the medium build physically, although some resembles the kankana-eys having fair complexion and sturdy built.
Being of Iloco-Cordillera descent, they practice simple, ordinary methods of agriculture. Immersion within Ilocos crash cropping is very households, tobacco-drying barns are readily found together with harvests of garlic and onion. Their farming methods and practices include a system to initiate farm workers at harvest time through a working relationship known as gamal, ammuy and bunggoy.
Prominent members of Bago indigenous group are former Governor Lupo Biteng of Ilocos Sur and his son Jonathan Biteng who also rose to become the Municipal Mayor of the same town.
Today Bago Mayors have founded a league of their own known as Ilocos Sur Upland Towns Association basically to serve as a springboard for higher political authorities to listen and need their aspiration and development thrusts.