L1 users: 20,000 (2011 SIL).
Bumthang district; southwest Lhuntse district; northwest Mongar district; north and west Trongsa district; possibly northeast border areas.
Ura, Tang, Chogor, Chunmat. Some northern varieties of Khengkha [xkf] and some southern varieties of Bumthangkha are reported by one source to likely be mutually intelligible. Tawang Monpa [twm] in India (Tawan Monba in China) is the same as, or closely related to, Bumthangkha. Lexical similarity: 92% with Khengkha [xkf], 47%–65% with Dzongkha [dzo], 40%–50% with Tshangla [tsj], 75%–77% with Nyenkha [neh], 70%–73% with Kurtokha [xkz].
Used as L2 by Khengkha [xkf].
Tibetan script [Tibt], Uchen style.