Throughout Rajshahi Division; Rangpur Division, Hilli area; possibly in Sylhet Division, Moulvibazar and Habiganj districts, and in Khulna Division, Jhenaidah, Kushtia, and Magura districts.
Borail Sadri, Mokkan Tila Sadri, Nurpur Sadri, Uchai Sadri. Dialects may need separate literature. Inherent intelligibility of 7 Sadri varieties on Borail ranges from 70%–93%; of 8 varieties on Nurpur from 78%–94%. Lexical similarity: 88%–97% with 14 Sadri varieties with the Borail Sadri dialect.
Vigorous but some educated people do not use Oraon with their children. All ages. Low proficiency in Bengali [ben].
The Oraon people came from India over 100 years ago. Sometime in the past some Oraon shifted from Kurux [kru], a Dravidian language, to Sadri, which is Indo-Aryan. Some Oraon people still speak Kurux. Traditional religion, Hindu.