 70.9% of people living in Mount Warren Park were born in Australia.The other top responses for country of birth were New Zealand 8.5%, England 6.2%, Scotland 0.9%, Philippines 0.7%, South Africa 0.6%.88.5% of people spoke only English at home; the next most common languages were 0.5% Vietnamese, 0.4% German, 0.4% Khmer, 0.4% Spanish, 0.3% Polish.