15,000,000 (1983 SIL). At least 1,000,000 in Bangkok. Kalerng has a few thousand speakers (1990 A. Diller).
Widespread in northeast Thailand; Kalerng subdialect: Sakon Nakhon and Nakhon Phanom.
6a (Vigorous). De facto language of provincial identity in east, northeast provinces.
Northern Isan, Central Isan (Kalerng, Kaleung, Kaloeng), Southern Isan, Korat.
Thai script [Thai].