The Rais come from surrounding hills in the North- Eastern Nepal ; mainly near Dhankuta, Terhathum , Bhojpur and Arun and Dudh valleys. Likewise , the Limbus come from the extreme east of Nepal; mainly from the region of Taplejung, Khotang and Arun Valley.

The Rais are neither purely Hindu nor Buddhist. They have their own tutelary deities and beliefs. Tibetan lamaism has, however, great influence in their rites and rituals. The Limbus whereas follow a mixture of Shivaism, Buddhism and Animism.

Economy and Trade :- The Rais mainly derive their subsistence from agriculture. They cultivate paddy, millet, wheat, corn and even cotton. They also form a strong group in the Gorkha regiment, Royal Army of Nepal , and police. The Limbus whereas are mostly farmers. An ancient strange tradition prohibits them from working in the fields on the full moon and new moon days. There is no apparent and logical reason for the tradition.