West of Walmanba, about WA border. East of Lake Gregory. (Oates 1975:133) ... about Lewis's Creek, immediately south of Sturt's Creek (Capell 1940:425) The Ngardi speakers lived in an area roughly bounded by Balgo and the southern shore of Lake Gregory in the north, the NT-WA border in the east, the Mangkayi area (north of Lake Mackay) in the south and just east of the Canning Stock Route in the west (Cataldi ASEDA 0737) Sandhill country west of the Tanami track, from Chilla Well, the Granites, and Gardiner Range extending west into Western Australia at Ima Ima (n.n. Ngaima ngaima) on Sturt Creek, to Balgo Hill (and the Pallotine Mission), also to Manggai, an unidentified water; they go south to near Milidjipi (129°40' E x 22°3'S) and to Tekkari, north of Lake Mackay (129°1'E x 21°50'S). These are two known native waters in otherwise unnamed country; at Lakes Hazlett, Lucas, White, and Wills. Some important but as yet unlocalized waters include Pinbin (near Lake Lucas), Lerauli, Ngandalara and Pinkatjana (near Emily Springs), Pindiri, Tjaldjiwan, Inindi (near Lake White), and Rabi (between Lakes Lucas and White). Their southern territory extends into large areas covered by mulga scrub (Tindale 1974).
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).