Hanson (Wangka Maya 2008) says that Tjupan (A31) has been referred to as 'Tjalkati', 'Kuwarra' and 'Kurlujarra'. Liberman (1978) treats Tjupany as a dialect of the Western Desert language A80 but he also questions whether it refers to a separate dialect. Horton treats Tjupany (A31) and Kuwarra A16 as distinct dialects of Western Desert language A80. Jessica Boynton is doing research on Tjupany (in 2008); von Brandenstein made some recordings at Meekatharra and Marsh is doing a depth study (Oates & Oates 1970:79). See the Goldfields Aboriginal Language Centre https://wangka.com.au/tjupan/
Possibly Meekatharra according to Oates and Oates description (Oates & Oates 1970:79) North of Yellirrie, Mt. Russell, Mt. Yagahong, west of Meekatharra, east of Wiluna on Liberman's map (Liberman 1978) (Berndt's map (1959) shows Djuban to be south of Lake Carnegie. The mapping of this language in AUSTLANG follows Liberman.) north of Mulga Queen (Berndt 1959, in Wangka Maya PALC 2008) Tjupan people are originally from the Wiluna area, from Darlot, Carnegie, Wongawol and Sandstone areas, and possibly through to the Menzies area. (Wangka Maya PALC 2008) Contemporary location Many Tjupan people have migrated to other locations throughout the Goldfield's regions. (Wangka Maya PACL 2008)
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).