Provides two estimates (high series and low series) of Mutitjulu's population using a procedure that derives the future population from mathematical projections of the Ngaanyatjarra-Pitjantjatjara-Yankunytjatjara regional population; projection methodologies; key determinants of future population growth; factors such as the growth of Mutitjulu outstations may limit the future population of Mutitjulu to a ceiling of 850 to 890 people