Korba tribes are found in the hilly tracts and plains of Bihar
. These tribes are related to the Kolerion race. The Pahadi Korba (Bainbarias) and Dihariya Korba (Kisan Korbas) are the two sub-tribes.
Main occupation of these tribes is agriculture.
The Korbas select life partners from their own tribes after paying the bride money. They also allow widow marriage and divorce.
Korba tribes have a panchayat known as 'Mayari,' led by the eldest person of the tribe. The Sun, Goddess Chandi and snakes are the main deities worshipped. Korba tribes perform various ceremonies to appease the souls of their ancestors.