168,300, all users. L1 users: 147,000 (2011 census), increasing. 2,080 Koche, 122,000 Rajbanshi, 18,800 Tajpuriya, 3,610 Gangai. L2 users: 21,300 (2011 census). Ethnic population: 173,000 (2011 census).
Kosi zone: Morang and Sunsari districts; Mechi zone: Jhapa district.
5 (Developing). Language of recognized indigenous nationality: Rajbanshi (Koch), Tajpuriya, Gangai.
Western Rajbanshi, Eastern Rajbanshi, Central Rajbanshi. Intelligibility is fairly high throughout the area (2001 J. Eppele and J. Grimes). Lexical similarity: 77%–95% with all varieties in Nepal (2001 J. Eppele and J. Grimes).
SOV; postpositions; noun head final; 2 noun classes or genders; content q-word in situ; 1 prefix, up to 4 suffixes; clause constituents indicated by both case-marking and word order; verbal affixation marks person and number; non-ergative; tense and aspect; passives and voice (no morphological passive, but 2 analytical passives); nontonal; 32 consonant and 6–7 vowel phonemes.
Devanagari script [Deva].
Hindu, Christian, Muslim, traditional religion.