The status of Dungibara is not clear. Steele (1984:245) treats it as the name of one of peoples whose language is Waka E28, and Kite and Wurm list Duungibara (E87) as a group name (2004:4).
According to Tindale Dungibara (Doongibara, Doongiburra) is the name of a group who speak Dalla E25; each group speaks a slightly different dialect (1974:166).
Upper Pine River and Daguilar Range (Tindale 1974). The area to the west of the Brisbane River (Steele 1984:265).
Speaker numbers were measured differently across the censuses and various other sources listed in AUSTLANG. You are encouraged to refer to the sources.
Speaker numbers for ‘NILS 2004’ and ‘2005 estimate’ come from 'Table F.3: Numbers of speakers of Australian Indigenous languages (various surveys)' in 'Appendix F NILS endangerment and absolute number results' in McConvell, Marmion and McNicol 2005, pages 198-230 (PDF, 2.5MB).