Australians are living closer together than ever before, with 2021 Census data revealing more than one in ten now live in apartments.

The figures show Australia’s population is growing fast, more than doubling since 1971 to almost 25.5 million people.

The number of Millennials (aged 25 to 39) is now at a similar level to Baby Boomers (aged 55 to 74) with 5.4 million in each group.

Statistician Dr David Gruen says the data shows who we are as a nation and how we have changed.

More than one million new residents arrived in Australia between 2017 and 2021 and now the proportion of Australian residents born overseas or have a parent born overseas is more than half.

The largest increase in country of birth outside of Australia is India with 217,963 additional people counted.

The Aboriginal and Torres Strait Islander population has also increased by a quarter since 2016 to 812,728 making up 3.2% of the total people counted.