50,000 (2003 SIL). L2 users: 15,000. 30,000 monolinguals.
Mongar district: southwest; eastern Sarpang and southeast Trongsa districts: smaller areas; Zhemgang district: widespread.
Middle Kheng, Upper Kheng, Lower Kheng. Bumthangkha [kjz] reportedly most similar related language, but comprehension not sufficient for complex discourse. Comprehend Kurtokha [xkz] with difficulty. Lexical similarity: 75%–85% with Bumthangkha [kjz], 70% with Kurtokha [xkz] and Nyengkha [neh], 34% with Dzongkha [dzo], 40% with Tshangla [tsj], and 75%–100% between dialects.
SOV; postpositions; genitives, relatives before noun heads, articles, adjective after noun heads; maximum prefixes 1; maximum suffixes 4; affixes indicate case; ergative; passives; causatives; some comparatives; CCVC; tonal.
Tibetan script [Tibt], Uchen style, unofficial usage.
Middle Kheng region strongest and most developed economically; Lower Kheng least developed. Buddhist.