On the coast west of Solitary Island to mouth of the de Grey River; at Pardoo; inland to Mulyie; formerly inland as far as Yarrie but contracting at time of early white contacts (Tindale 1974). ... along the coast of Western Australia, in the Pilbara region, north of the modern city of Port Hedland (von Brandenstein 1967: map 5) (Westerlund 2007:8).
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).
Westerlund, Torbjörn. 2007. A grammatical sketch of Ngarla: a language of Western Australia. South Hedland, WA: Wangka Maya PALC.
Geytenbeek, Brown, (2002), Ngarla-English Dictionary. South Hedland, WA: Wangka Maya PALC.