Nepali accounted as a mother tongue for 44.86% while also being a second additional language for 46.2% of the total population.

Nepali, Bhojpuri, Maithili, Awadhi, the Tharu languages and Urdu fall in this group.

The Sino-Tibetan family of Nepal's languages forms a part of its Tibeto-Burman group.

Languages belonging to this group include Tamang, Nepal Bhasa (Newar), Magar and Limbu.

The newly added mother tongues were Bhote, Lowa, Chum/Nubri, Baragunwa, Nar-Phu, Ranatharu, Karmarong, Mugali, Tichhurong Poike, Sadri, Done, Munda/Mudiyari and Kewarat.

[2] According to the Language Commission of Nepal Maithili and Limbu are recommended to have official status in Province No.