The north coast from the De Courcy Head area to and including the southern half of Bowen Strait. The neck of Cobourg Peninsula east from about Wongarlu Bay. Murganellam. There was no precise information in 2007 on the southern limits of Iwaidja affiliations (Harvey ASEDA 802). The Iwaidja language is spoken on Croker Island and the Cobourg Peninsula in Western Arnhemland, Northern Territory. (Pym & Larrimore 1979).
Batchelor Press published a few materials in 2005.
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).
Pym, Noreen. 1979. Papers on Iwaidja phonology and grammar: Work papers of SIL-AAB A2. Darwin: SIL
Pym, Noreen. 1982. Iwaidja working dictionary. Dariwn: SIL. Pym, Noreen. Iwaidja word list, ASEDA 0012.