 Out of Crestmead's population 50.5% are female and 49.5% male.The median age of the Crestmead population was 28 years, 10 years below the national median of 38, with 64.2% of people living in Crestmead were born in Australia.The other top responses for country of birth were New Zealand 10.9%, England 2.1%, Samoa 2.1%, Philippines 1.2%, Cambodia 0.7%.