
Australia is the sixth-largest nation in the world by area, but its population density is incredibly low, with most of its interior being semi-arid desert. As of June 2024, Australia's population density was 3.5 people per square kilometre, making it one of the most sparsely populated countries in the world. Despite this, Australia's population is growing at its fastest rate since the 1950s, and its cities and towns are densifying. This article will explore where in Australia the densest populations are found and the implications of this urban growth.
| Characteristics | Values |
|---|---|
| Population density | 3.3-3.6 people per square kilometre |
| Population | 25,499,884-27,940,400 |
| Population growth rate | Fastest since the 1950s |
| Population distribution | 75% of the population lives on 2.6% of the land mass |
| Most populous city | Sydney, with 5,230,330 people (as of June 2018) |
| Most densely populated city | Melbourne, with 1,500-521 people per square kilometre |
| Least densely populated city | Darwin, with 44.98 people per square kilometre |
| Most populous urban area | Melbourne, with 4,967,733 people |
| Least populous city | Darwin, with 140,000 people |
| Most populous state or territory | Australian Capital Territory, with 171 people per square kilometre |
| Least populous state or territory | Northern Territory, with 0.2 people per square kilometre |
| Population concentration | 80%-89% of the population lives near the coast in the southeast |
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What You'll Learn

Melbourne's inner city has the highest density
Australia is the sixth-largest nation in the world by land area, but its population density is incredibly low, at 3.3 people per square kilometre as of June 2020. This is due to the country's large desert areas and semi-arid geography, which make living conditions difficult. However, in Australia's biggest cities, such as Sydney and Melbourne, the population density is higher.
Melbourne's inner city has the highest population density in Australia, with 22,400 people per square kilometre as of 2024. This is followed by Potts Point and Pyrmont in Sydney's inner city, with 16,700 and 16,500 people per square kilometre, respectively. These numbers are still relatively low compared to other global cities; for context, New York City has a population density of over 38,000 people per square kilometre.
Melbourne, Australia's largest urban area geographically, covers 2,453 square kilometres and has a population of just over four million. It is less densely populated than Sydney, with approximately 1,500 people per square kilometre, according to the Demographia World Urban Areas survey. Melbourne's inner-city population density has increased over the years, with 2017 data showing 19,500 people per square kilometre.
Melbourne's high population density has implications for housing trends and urban planning. The Victorian government's Plan Melbourne 2017 aimed to increase density in the city's middle suburbs by relaxing planning regulations. As Melbourne's population continues to grow, with an increase of 142,600 people in 2023-24, the city faces the challenge of accommodating this growth while maintaining a high quality of life for its residents.
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Sydney's inner-city suburbs are also dense
Australia's population density is one of the lowest in the world, with 3.3 to 3.5 people per square kilometre as of June 2024. This is because most of the country's interior is desert, making living conditions extremely difficult. However, the population density in Australia's biggest cities, such as Sydney and Melbourne, is much higher.
Melbourne's inner city has Australia's highest population density at 22,400 people per square kilometre. Sydney's inner-city suburbs are also dense, with Potts Point and Pyrmont having the second-highest population density in Australia at 16,700 and 16,500 people per square kilometre, respectively. Wentworth Point is currently the densest suburb in Sydney by population and one of the densest in the country. Other dense inner-city suburbs in Sydney include Newtown, Enmore, Marrickville in the Inner West; Darlinghurst and Paddington in the city area; and Bondi Junction. Haymarket in the city centre also has a high population density of 22,000 people per square kilometre.
Sydney's population grew by 107,500 people (2.0%) in 2023-24, with net overseas migration and natural increase being positive contributors. The city has the largest combined area in the high and very high-density classes, with 194 square kilometres. This is followed by Melbourne with 69 square kilometres and Brisbane with 24 square kilometres.
While Australia's major cities have population densities comparable to other Western countries, the overall population density is low due to the vast empty spaces in the country's interior. This highlights the highly urbanised nature of the population, with half living in the three largest cities and 75% residing on just 2.6% of the land mass.
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Most Australians live near coastlines
Australia has a low population density of 3.3 to 3.6 people per square kilometre, making it one of the most sparsely populated countries in the world. However, the population is not evenly distributed across the country, with most Australians living near coastlines. In fact, 75% of Australia's population resides on just 2.6% of the land mass. This is due to the semi-arid and desert geography of much of the interior of the country, which presents extremely difficult living conditions.
The majority of Australia's population is concentrated in urban areas, particularly on the Eastern, South Eastern and Southern seaboards. Five cities in Australia, including their suburbs, have a population of over one million people. The country's most populous city is Sydney, with 5,230,330 people as of June 2018 and a population density of 430 people per square kilometre. Sydney also has the largest combined area in the high and very high-density classes, with 194 square kilometres. Melbourne, Australia's second-largest city with a population of 4,967,733 people, has a population density of 1,500 people per square kilometre and is 32nd in the world in terms of geographical area. Melbourne's inner city has Australia's highest population density at 22,400 people per square kilometre. Potts Point and Pyrmont, both in Sydney's inner city, have the second-highest population density in Australia at 16,700 and 16,500 people per square kilometre, respectively.
Outside of Sydney and Melbourne, the regions with the highest population density are in Brisbane (Fortitude Valley), the Gold Coast (Surfers Paradise), and the ACT's Kingston. Brisbane has a population of 2.48 million people and a population density of 45 people per square metre. The Gold Coast is the least densely populated major city in Australia, with 1,003 people per square kilometre. The Australian Capital Territory has the highest population density of any state or territory, with 171 people per square kilometre.
The high population densities in Australia's biggest cities can lead to various drawbacks, such as increased pollution of air, water, and land, as well as reduced autonomy. As more people move into these cities, there is also a trade-off between green spaces and the construction of new dwellings. However, the advent of remote work may reduce the concentration of population in these urban areas in the coming years.
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75% of the population lives on 2.6% of the land
Australia is the sixth-largest nation in the world by land area, yet its population density is incredibly low. As of June 2024, Australia's population density was 3.5 people per square kilometre, making it one of the most sparsely populated countries globally. This is due to the semi-arid and desert geography of much of the interior of the country, also known as the Outback.
Despite the low overall population density, 75% of Australia's population resides on just 2.6% of the land mass. This is because most of Australia's population is concentrated in urban areas, particularly on the Eastern, South Eastern, and Southern coastlines. Australia's population is highly urbanised, with 89% of its population living in a handful of urban areas. The biggest cities in Australia, such as Sydney, Melbourne, Brisbane, and Perth, have witnessed significant population growth in recent years, contributing to the high population density in these regions.
Melbourne, Australia's second-largest city, has a population of nearly five million people and is the country's most densely populated city, with approximately 1,500 people per square kilometre. Melbourne's inner city has Australia's highest population density, reaching 22,400 people per square kilometre. Sydney, Australia's most populous city, is also one of the country's most dense, with 1,900 people per square kilometre. However, these numbers are still relatively low compared to other global cities.
The high population density in Australia's major cities has various implications. One drawback is increased pollution of the air, water, and land. Additionally, high population density can lead to reduced autonomy and the loss of natural landscapes as more dwellings are erected to accommodate the growing population. However, high-density living also offers benefits, such as improved job opportunities, especially for in-person entry-level positions.
To address the challenges posed by high population density, Australian governments have implemented various measures. For example, the Victorian government's Plan Melbourne 2017 aimed to densify Melbourne's middle suburbs by relaxing planning regulations, while the NSW government has encouraged attractive designs for medium-density dwellings through architectural design competitions. These initiatives strive to balance population growth with sustainable and liveable urban environments.
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Population density impacts housing trends
Australia's population density is among the lowest in the world, with 3.5 people per square kilometre as of 2024. However, the country's population is highly urbanised, with 75% of its population residing on just 2.6% of the land mass. This urbanisation is particularly evident in the inner cities of Melbourne and Sydney, which have the highest population densities nationally. Melbourne's inner city has the highest population density in Australia, with 22,400 people per square kilometre, followed by Potts Point and Pyrmont in Sydney, with 16,700 and 16,500 people per square kilometre, respectively.
The high population density in these cities has several implications for housing trends. Firstly, as the population density increases, more dwellings are erected, leading to the replacement of green spaces with apartment buildings and houses. This development can impact natural landscapes, as seen in proposals from places like Brisbane, which aim to mandate a certain amount of green space in new apartment buildings.
Secondly, population density influences rental growth and housing values. While the relationship between population density and rental growth is generally considered weak, there are nuances to this relationship. For units, areas with high population density have shown stronger rental appreciation over the short term, but weaker growth over the past decade. In contrast, for house rents, higher population densities have been associated with weaker rental appreciation over the past year but stronger growth over the past decade.
Moreover, population density can impact housing demand. A high population density may not significantly influence house values, but it can contribute to the overall demand for housing. As more people move into densely populated areas, the demand for housing increases, especially in cities with limited land availability. This demand is further exacerbated by Australia's strong population growth, driven by net migration, which results in a higher proportion of working-age adults seeking housing.
Lastly, population density can influence the quality of life in these areas. One drawback of living in densely populated cities is the increased pollution of air, water, and land. Additionally, high population density can result in reduced autonomy and a trade-off between green spaces and residential spaces. However, urban sustainability programs are working to mitigate these issues and improve the quality of life in densely populated cities.
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Frequently asked questions
The densest population in Australia is found in Melbourne, with the inner city having the highest population density at 19,500 to 22,400 people per square kilometre.
Melbourne is the second-largest city in Australia, with a population of 4,967,733 people.
Sydney, the most populated city in Australia, has a population density of 430 people per square kilometre. Brisbane has a population density of 45 people per square metre. Perth has a population density of 3 people per square kilometre.
The population density in Australia's large cities is important because it affects the quality of life for residents. High population densities can lead to increased pollution and reduced autonomy. It also impacts the housing market, with more dwellings being erected and green spaces being replaced by apartment buildings.





























