The report predicts the population of Australia is expected to experience slower, but still positive, growth through the end of the century. According to a regional population estimate, Australia/New Zealand (lumped together) will reach 31 million in 2022, 34 million in 2030 and 38 million in 2050.
Underpopulation-if the number of people living in an area is fewer than the number that can be supported by the resources in that area, then it is under populated. Australia-an under populated country with a population of only 21.7 million and a labour force of only 11.6 million, Australia is under-populated.
Australia's population is likely to increase by more than 10 per cent by 2030, with the country to gain another three million residents, a leading property buyers agency is forecasting.
The Australian Academy of Science has recommended that 23 million people would be a safe upper limit for Australia. That was before climate change and peak oil became hot topics. We're nearly there now. With a balanced migration program, it is possible to stabilise Australia's population until 2050.
This reflects a broadly stable fertility rate of 1.9 births per woman and continuation of net overseas migration at an average annual rate of 0.6 per cent of the total population — the same rate as over the last 40 years. Based on these trends Australia's population is projected to reach 35.9 million in 2050.
The Australian Bureau of Statistics (ABS) reports Australian population growth in the 12 months to June 2021 was entirely due to natural increase adding 134,800 people, while NOM was a loss of 88,800 people.
The warming will likely cause a number of key trends:
Accelerated sea level rise and worsening coastal erosion. Increased weather intensity including Category 6 cyclones. More frequent and extreme bushfires. A greater chance of extreme flood events.
THE optimal population size for Australia is just 15 million people. That's the opinion of environmental experts Peter Martin and James Ward from the University of South Australia, and Paul Sutton from the University of Denver.
Residents in the Australian Capital Territory are expected to live the longest - 82.7 years for males and 86.3 for females.
Estimates vary, but we're expected to reach "peak human" around 2070 or 2080, at which point there will be between billion and 10.4 billion people on the planet.
Population, society and the economy
Australia's population will increase by 50-100% by 2050. The proportion of the population living in the north and west is projected to increase at the expense of smaller southern states. Median age will increase from the 36.8 years of 2007 to between 41.9 and 45.2 years.
In 2050, Melbourne would be expected to reach 8.5 million while Sydney's population would have hit 8.3 million under the medium-growth model.
According to the ABS, Australia's estimated resident population at 30 June 2007 of 21.0 million people is projected to increase to between 30.9 and 42.5 million people by 2056; and to between 33.7 and 62.2 million people by 2101.
Australia's population density is low because most of the country's interior is desert (also known as the outback) and presents extremely difficult living conditions.
More than half (around 60%) of Australia's population growth in recent decades has been due to immigration. The rest is due to 'natural increase' (births minus deaths). Around half of the natural increase is due to births to migrants. Tens of thousands of people emigrate from Australia each year.
Natural increase drove all of Australia's population growth in 2020–21 and is also projected to drive most of Australia's population growth in 2021–22. Net overseas migration is forecast to return to being the largest contributor to population growth from 2022–23.
Visceral fat is a risk factor for coronary heart disease, the leading underlying cause of death for Australian men. Coronary heart disease, which results from a combination of biological factors and lifestyle habits, is a major reason for the difference in mortality between men and women.
Compared with non-Indigenous Australians, cardiovascular diseases and cancer represented a smaller proportion of deaths, and external causes and endocrine, metabolic and nutritional disorders represented a larger proportion of deaths, among Indigenous Australians.
Males born in the Lesotho have the lowest life expectancy of the world in 2022. Similarly low is the life expectancy for females born in this country. The average woman lives only 56 years. The lowest life expectancy for women in the world in 2022 was for girls born in Nigeria, with only 54 years.
More than 80 per cent of Australians live within the coastal zone.
Australia's population is ageing due to increasing life expectancy and declining fertility rates. Both the number of people at the older ages is growing and older people are representing an increasing share of the total population (CEPAR 2021).
Australia in 2025 will be: strong, prosperous, healthy and secure and positioned to benefit all Australians in a rapidly changing world. We are told that Australia will need a diverse economy built on sustainable productivity growth, knowledge-based industries and high value goods and services.
Since the beginning of the 20th century Australia has experienced an increase of nearly 1 °C in average annual temperatures. This rate of increase has accelerated even more over the last 50 years and is predicted to continue. The City of Sydney, for example, could have an increase of up to 4.5 °C by 2100.
The study, published in the journal Sustainability, found Tasmania could become recognised "as Australia's 'local refuge (lifeboat)' as conditions on the continental mainland may become less amenable to supporting large human populations in the future".