6,300,000 (1991 UBS). L2 users: 700,000.
Kasai-Occidental province: southeastern third; Kasai-Oriental province: Sankura district.
2 (Provincial). Statutory provincial language in Kasai Region (2006, Constitution, Article 1(8)).
Lulua, Luluwa, West Luba. Significant dialect differences between East Kasai region (Baluba people) and West Kasai region (Bena Lulua people). Reportedly similar to Hemba [hem].
Also use French [fra].
Latin script [Latn].