L1 users: 21,400 (2001 SIL), increasing.
North West region: Boyo division, Bum subdivision, mainly Fonfuka village.
None known. Lexical similarity: 71% with Kom [bkm].
Bum and Cameroon Pidgin [wes] used in health centers and with outsiders. Almost all domains. All ages. Positive attitudes. Also use Chungmboko [cug], Kom [bkm], Ncane [ncr], Noone [nhu]. Also use Cameroon Pidgin [wes], in health centers and with outsiders. Used as L2 by Kom [bkm], Ncane [ncr], Noone [nhu].
Latin script [Latn].
Christian, Muslim, traditional religion.