Khulna division: Jhenaidah, Kushtia, and Magura districts; Rajshahi division: widespread; Rangpur division: Hilli area; Sylhet division: possibly Habiganj and Moulvibazar districts.
Borail Sadri, Nurpur Sadri, Uchai Sadri, Mokkan Tila 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.
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.