Australia's Population: Understanding The Ent Changes

what is the ent population change for australia

Australia's population has seen significant changes over the years, with an increase from 3.8 million people in 1901 to approximately 25 million in 2021. As of September 2024, the population stood at 27.3 million, with an annual growth rate of 1.8%. This growth is driven by natural increase (births exceeding deaths) and net overseas migration. Western Australia has been experiencing the fastest growth rate, while Tasmania's growth rate lags. The population density is low, with 4 people per square kilometre, and the median age is around 38 years. Projections indicate that by 2071, Australia's population could reach up to 45.9 million, with an increasing median age and a decline in the working-age population.

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Population growth

Australia's population growth is influenced by two main factors: natural increase (births minus deaths) and net overseas migration (immigration minus emigration). As of 30 September 2024, Australia's population was approximately 27.3 million people, with a quarterly growth of 0.4% (115,027 people) and an annual growth of 1.8% (484,000 people). The annual natural increase contributed 104,200 people to this total, while net overseas migration added 379,800 people. This growth rate represents a slight decline from the ten-year average annual growth rate of 1.4% observed up to 2022.

Western Australia experienced the fastest growth rate at 2.5%, while Tasmania had the slowest at 0.3%. The population growth in Western Australia was attributed to various factors, including its thriving economy, attractive lifestyle opportunities, and the resources sector. Victoria and Queensland also saw notable growth rates of 2.9% and 2.7%, respectively.

The urban population in Australia has significantly increased over time, rising from 58% in 1911 to 90% in 2021. This trend is expected to continue, with projections showing that the number of households will increase from 10 million in 2021 to between 13.3 and 13.9 million by 2046. The median age of the population is also projected to increase, rising from 38.5 years to between 43.8 and 47.6 years by 2071.

While net overseas migration has been a significant contributor to population growth, interstate departures are expected to exceed interstate arrivals in the future, resulting in a net interstate migration loss. This loss is projected to range from 2,500 to 6,000 people annually starting in 2027. Additionally, the working-age population aged 15-64 years is projected to decrease from 64% to between 58% and 60%, while the population aged 65 years and over is expected to increase from 17% in 2022 to between 25% and 27%.

Population projections for Australia are based on assumptions about future levels of fertility, mortality, and migration. These projections are not predictions but illustrations of how population change components would impact the country's population trajectory. The Australian Bureau of Statistics uses the cohort-component method to produce these projections, applying assumptions to a base population to obtain projected populations for subsequent years.

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Natural increase

Australia's population has grown from 3.8 million in 1901 to 25.7 million in 2021, with an annual growth rate of 1.4%. As of September 2024, Australia's population was 27,309,396, with an annual growth of 484,000 people (1.8%). This population growth is attributed to natural increase and net overseas migration.

The Australian government has commissioned reports and studies to understand fertility trends and the impact of government policies on fertility decisions. Despite the declining fertility rate, Australia's population is projected to continue growing. By 2071, Australia's population is estimated to reach between 34.3 and 45.9 million people, with a median age range of 43.8 to 47.6 years.

While natural increase is crucial, net overseas migration has been the major contributor to population change in most Australian states. Additionally, net interstate migration has resulted in a net loss for the entire country. The number of interstate departures is projected to exceed arrivals in all years, leading to a net interstate migration loss.

Life expectancy in Australia has increased significantly since the early 1900s, and age-adjusted mortality rates continue to decline due to medical advances and improved safety measures. This decrease in mortality has helped offset the decline in fertility rates, contributing to a positive natural increase.

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Net overseas migration

Net international arrivals have played a crucial role in the population growth of Australian cities. This is particularly noticeable in the inner-city areas, such as Melbourne's CBD and surrounding suburbs, where international immigration has been a primary driver of growth. However, it's important to note that internal migration and births outnumbering deaths are also factors in the overall population change.

Data from CEIC on Net Overseas Migration for the Australian Capital Territory shows fluctuations over time. The data reached an all-time high of 3,017,000 people in March 2023, while recording a low of -1,109,000 people in December 2020. The most recent data point provided is for September 2024, showing a figure of 1,579,000 people.

In summary, net overseas migration has been a significant factor in Australia's population growth and changing demographics. Both the Australian Capital Territory and Victoria have experienced fluctuations in net overseas migration numbers over the years, contributing to the overall population dynamics of the country.

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Urban population increase

Australia's urban population has been steadily increasing over the last century. In 1911, 58% of Australians lived in urban areas, and this rose to 86.51% in 2025, with 23,335,357 people living in urban areas. This increase is due to a combination of natural increase (more births than deaths) and net overseas migration.

In 2023-24, the capitals grew by 427,800 people (2.4%), with overseas migration contributing 373,000, natural increase adding 89,500, and internal migration resulting in a loss of 34,600 people. This highlights the significant role that migration plays in the growth of urban areas.

Cities like Sydney, Melbourne, and Perth are experiencing substantial population increases. To accommodate this growth, these cities are planning to build a large number of new homes. For example, Greater Sydney, Greater Melbourne, and Perth aim to construct 100,000 new dwellings annually, accounting for 82% of all new dwellings in Australia.

The growth in urban populations has led to increased pressure on resources, particularly water supplies. Infrastructure Australia has identified that climate change will significantly impact the water sector, with southeastern parts of the country experiencing a long-term decline in rainfall, yet witnessing most of the population growth. This has resulted in rising urban water and sewerage service prices, affecting household budgets.

Additionally, the demand for housing in greenfield areas on the fringes of existing urban areas has been high, as people seek better access to green spaces. This trend may influence the expansion of urban areas or the creation of new ones. Overall, the increase in Australia's urban population has wide-ranging implications, and careful planning is necessary to manage the associated challenges effectively.

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Population projections

Australia's population growth is comprised of natural increase (births minus deaths) and net overseas migration (migration arrivals minus migration departures). In the year ending 30 September 2024, Australia's population grew by 484,000 people (1.8%). The annual natural increase was 104,200, and net overseas migration was 379,800.

The population of Australia has increased from 3.8 million in 1901 to 25.7 million in 2021. The urban population has increased from 58% of the total population in 1911 to 90% in 2021. Fertility has decreased from 3.1 births per woman in 1921 to 1.7 in 2021. Life expectancy at birth has increased by 26 years since the early 1900s.

The number of households is projected to increase from 10 million in 2021 to between 13.3 and 13.9 million in 2046. The number of families is projected to increase from 7.2 million to between 9.5 and 9.7 million. Living with a partner is projected to remain the most common living arrangement.

Australia's population in 2022 (26 million) is projected to reach between 34.3 and 45.9 million people by 2071. The current ten-year average annual growth rate (1.4%) is projected to decline to between 0.2% and 0.9%. The median age (38.5 years) is projected to increase to between 43.8 and 47.6 years. The working-age population aged 15-64 years is projected to decrease from 64% to between 58% and 60%, while the population aged 65 years and over is expected to increase from 17% in 2022 to between 25% and 27%.

In all series, interstate departures will exceed interstate arrivals, resulting in a net interstate migration loss. This loss is projected to be between 2,500 and 6,000 people per year from 2027. The median age of the population of South Australia is projected to increase from 40.7 years in 2022 to between 45.6 and 50.0 years in 2071, remaining the second oldest of all states, behind Tasmania.

Frequently asked questions

Australia's population as of 30 September 2024 was 27,309,396.

The annual growth rate in 2024 was 1.8%.

Population growth in Australia is driven by natural increase (births minus deaths) and net overseas migration.

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