The 2021 Census of Population and Housing has delivered a snapshot of the different generations that make up Australia.
The latest data reveals that, within a very small margin, numbers of Millennials (25-39 years old) have caught up to Baby Boomers (55-74 years old) as the largest generational group in Australia.
In the 1966 Census, nearly two in every five people (38.5 per cent) were Baby Boomers.
Baby Boomers and Millennials each have over 5.4 million people, with only 5,662 more Baby Boomers than Millennials counted on 10 August 2021.
Over the last ten years, the Millennials have increased from 20.4 per cent of the population in 2011 to 21.5 per cent in 2021. In the same time, Baby Boomers have decreased from 25.4 per cent in 2011 to 21.5 per cent in 2021.
Millennials are of working age and are upskilling, representing 40 per cent of people attending vocational education, including TAFE, and 48 per cent of people currently serving in the regular service of the Australian Defence Force.
Millennials and Baby Boomers report quite different religious affiliations, with nearly 60 per cent (56.8 per cent) of Baby Boomers reporting a Christian religious affiliation compared to 30 per cent of Millennials (30.6 per cent).
More than 45 per cent (46.5 per cent) of Millennials reported that they had no religion compared to 30 per cent of Baby Boomers (30.7 per cent).
Generation Z (10-24 years old) represent 18 per cent of Australia and 30 per cent of the Aboriginal and Torres Strait Islander population.