1,500 (2006 C. Shimmin), decreasing. No monolinguals. Ethnic population: 3000 (Thongkum 1984).
Central, northeast side, foot of Petchabun mountains, Pitsanulok, Petchabun, southwest Chaiyaphum (most), and Nakhon Ratchasima provinces.
Chaiyaphum users say they understand Petchabun only with difficulty, if at all. At least 91% lexical similarity among all dialects (Diffloth 1984).
Few children can speak Nyah Kur. Nearly extinct in Petchabun and Nakhon Ratchasima provinces (2007 SIL). Home. Mainly older adults. Mixed attitudes. Some have strong identity links to their language, others prefer to identify themselves as Thai (2002 P. Suwilai, 2007 SIL). Also use Central Thai [tha].
Buddhist, traditional religion, Christian.