66.8% of people living in Riverhills were born in Australia, compared to the national average of 69.8%; the next most common countries of birth were England 5.5%, New Zealand 4.3%, South Africa 1.8%, Vietnam 1.5%, Sri Lanka 1.4%.
80.7% of people spoke only English at home; the next most common languages were 2.1% Vietnamese, 1.1% Arabic, 0.9% Hindi, 0.8% Cantonese, 0.8% Spanish.