It is spoken by about 100,000 Bakumpai people (a subgroup of Dayak people) living in the central Kalimantan, Indonesia.
Thus there is high lexical similarity with the neighbouring languages (75% with Ngaju, 45% with Banjar).
In addition, Berangas language who endangered is also very similar to Bakumpai, possibly a dialect.
[2] The following is a vocabulary comparison between the closely related Bakumpai and Ngaju languages, as well as Indonesian and its translation into English.
This Austronesian languages-related article is a stub.