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As of June 2025, it was estimated that around 7.3 percent of Australians were aged between 25 and 29, and the same applied to people aged between 35 and 39. All in all, 55 percent of Australia’s population was aged 35 years or older as of June 2025. At the same time, the age distribution of the country also shows that the share of children under 14 years old was almost the same as the share of people over 65 years old. 

A breakdown of Australia’s population growth

Australia is the seventh-largest country in the world, yet with a population of around 27.6 million inhabitants, it is only sparsely populated. Since the 1970s, the population growth of Australia has remained fairly constant. While there was a slight rise in the Australian death rate in 2022, the birth rate of the country decreased after a slight rise in the previous year. The fact that the birth rate is almost double the size of its death rate gives the country one of the highest natural population growth rates of any high-income country.  

National distribution of the population

Australia’s population is expected to surpass 29 million people by 2030. The majority of its inhabitants live in the major cities. The most populated states are New South Wales, Victoria, and Queensland. Together, they account for over 75 percent of the population in Australia.