
Australia is a country with a unique urban geography. Its two largest cities, Sydney and Melbourne, are home to 9.3 million people, which accounts for four in every ten Australians. This is an unusually large proportion of the population to be concentrated in just two cities. Australia's other four state capitals – Brisbane, Perth, Adelaide, and Hobart – along with the national capital, Canberra, also account for a large portion of the population. This concentration of people in a few large cities has contributed to high property prices and a high cost of living.
| Characteristics | Values |
|---|---|
| Population of Sydney and Melbourne | 9.3 million |
| Share of Australia's population living in Sydney and Melbourne | 4 in 10 Australians |
| Share of Australia's population living in the top eight cities | 60-70% |
| Comparison with other countries | Uncommon for two cities to account for such a large portion of the population |
| Impact on housing prices | High |
| Comparison with US cities | US has much bigger cities, but Australia's big cities are very big by US standards |
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What You'll Learn

Population distribution
Australia's population is heavily concentrated in a few large cities. Sydney and Melbourne, the country's two largest cities, are home to 9.3 million people, or four in every ten Australians. This concentration in two cities is unusual and not seen in other countries. For example, Tokyo and Yokohama, Japan's two largest cities, account for less than 10% of the country's population, while London and Birmingham, the two biggest cities in Britain, make up less than 20%. When including Australia's other four state capitals (Brisbane, Perth, Adelaide, and Hobart) and the national capital, Canberra, nearly two-thirds of the country's population lives in just six cities.
This concentration of population in a few large cities has significant implications for housing demand and property prices. Well-located land becomes scarce, driving up prices. The high cost of housing in these cities is a pressing issue in Australia.
The reasons for this uneven population distribution are complex. One factor may be the patterns of development in Australia's former colonies, which have contributed to the country's unusual urban geography. Additionally, the way populations are classified as living in certain cities may vary between countries, with Australian figures including suburbs, while other countries may not.
In contrast to Australia, countries like the United States have a larger number of smaller cities. Despite having a population 20 times that of Australia, the US has only one city (New York) that is bigger than all Australian cities. However, when considering metropolitan areas, which can include multiple towns and cities, American cities have much higher populations. For example, while Melbourne has a population of 4 million, the Los Angeles metropolitan area has a population of over 12 million.
In summary, Australia's population is highly concentrated in a few large cities, particularly Sydney and Melbourne, which has led to high housing demand and property prices. This uneven distribution may be due to historical development patterns and differences in population classification between countries.
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Housing prices
Sydney has historically been known for its high housing prices, with a median house price of $1.6 million and a median rental price of $750 per week. However, in recent years, other cities have seen more significant increases in housing costs. Adelaide, for example, has experienced a surge in housing prices, attracting buyers from more expensive cities like Melbourne and Sydney. By 2024, Adelaide's median house price reached $929,972, with rental prices at $595 per week. Similarly, Canberra has seen skyrocketing living costs and soaring rents, ranking as the second most expensive city to rent a house in Australia, with median rents of $610 per week. Brisbane has also become increasingly expensive, overtaking Melbourne as the third most expensive property market in the country.
Several factors influence property prices in Australian cities. Demand for housing in Byron, a popular tourist destination, is driven by affluent, middle-aged, Australian-born couples. This has resulted in a high median household age and a below-average number of children per household. Despite its high housing prices, Byron has a higher percentage of households owning their homes outright compared to the national average. In contrast, cities like Sydney, with high housing costs and a large rental market, may offer more opportunities for employment in employment hubs, impacting the affordability of housing for first-time home buyers.
The cost of living in Australian cities is also affected by transportation and food costs. Sydney remains the most expensive city for transportation, while Canberra is 25% cheaper. Brisbane and Melbourne are also more affordable for transportation, at 1% and 18% cheaper than Sydney, respectively. Regarding food costs, Canberra is the most expensive city, with groceries 2.1% more expensive than in Sydney.
Overall, while Sydney has traditionally been considered the most expensive city in Australia, recent data suggests that other cities, such as Adelaide, Canberra, and Brisbane, are now competing for that title. The varying costs of housing, transportation, and food across these cities contribute to the overall cost of living and play a significant role in influencing individuals' decisions about where to live.
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Urban geography
Australia's urban geography is unique in that a large proportion of its population is concentrated in a few large cities. Sydney and Melbourne, for example, account for four in every ten Australians, which is uncommon compared to other countries. When including the other four state capitals (Brisbane, Perth, Adelaide, and Hobart) and the national capital Canberra, nearly two-thirds of Australians live in just six cities. This concentration of population in a few large cities has contributed to high property prices and a high cost of living in these urban hubs.
There are several factors that have influenced the development of Australia's urban geography. One factor is the country's history and patterns of colonisation. The way that cities and towns were established during the colonial period may have contributed to the nation's current urban character. Additionally, local government areas (LGAs) play a significant role in Australia's urban geography. LGAs function as cities, councils, regions, or shires and cover around 90% of the nation. However, in most capital cities, the central LGA covers only a small portion of the total urban area, with suburban LGAs having significantly larger populations.
The definition and classification of urban areas also impact Australia's urban geography. The Australian Bureau of Statistics (ABS) uses the term "Greater Capital City Statistical Area" (GCCSA) to define the broad functional extent of each state and territory capital city. The population figures quoted for capital cities often refer to this GCCSA, which can include multiple towns and cities. This differs from how populations are classified in other countries, such as the United States, where metropolitan areas may not include suburbs in the same way.
The concentration of economic output in Australia's large cities is another factor shaping their urban geography. Sydney and Melbourne, for instance, generate more than 40% of the country's economic output. This economic dominance can attract people to these cities, further contributing to their size and influence. However, this concentration of economic power in a few cities can also lead to challenges, such as increased pressure on infrastructure and services, and higher costs of living.
Overall, Australia's urban geography is characterised by a relatively small number of large cities that dominate the demographic and economic landscape. The interplay between historical factors, local government structures, statistical definitions, and economic forces has contributed to the development and growth of these cities, shaping the unique urban geography of Australia.
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Inner-city living patterns
Australia's inner-city living patterns are similar to those in the US, particularly in West Coast and Southern cities. However, there are some key differences in how populations are classified within these cities. Australian cities tend to include suburbs in their population figures, whereas US cities often do not. This can give the impression that Australian cities are larger than they are when compared to US cities.
For example, Melbourne, Australia's second-largest city, has a population of around 4 million people within a metropolitan area of 9,990.5 km2. In contrast, Chicago, a well-known US city, has a population of 2 million people within a much smaller metropolitan area of 606 km2. If we consider the Chicago metro area, the population increases to nearly 10 million people across 28,120 km2.
This discrepancy in how populations are classified can make it challenging to compare the sizes of Australian and US cities directly. However, it is worth noting that Australia has a smaller population than the US, yet it has several large cities that are comparable in size to notable US cities.
Sydney and Melbourne, Australia's two largest cities, are home to approximately 9.3 million people, accounting for four out of every 10 Australians. This concentration of the population in two cities is unusual and contributes to high housing prices and wealth concentration in these cities.
In summary, while Australia's inner-city living patterns share similarities with the US, differences in population classification methods can make direct comparisons challenging. Australia's large cities, such as Sydney and Melbourne, account for a significant portion of the country's population and have distinct economic and demographic impacts.
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City classification
Australia's cities are considered big because of the concentration of the population in a few urban hubs. Sydney and Melbourne, for instance, account for four in every ten Australians, which is unusual when compared to other countries. The IMF's figures show that Japan's two largest cities, Tokyo and Yokohama, account for less than 10% of the total population, while London and Birmingham, Britain's biggest cities, make up less than 20%.
This concentration of population in a few cities is reflected in the high cost of housing in these cities. The demand for well-located land is high, while the supply is constrained, resulting in higher property prices.
When comparing Australian cities with those in the US, it is important to consider the differences in metropolitan and inner-city population calculations. For instance, while Melbourne has a population of 4 million, it covers 9,990.5 km2, whereas Chicago, with a similar population of 2 million, covers only 606 km2. If we consider the Chicago metropolitan area, it has a population of just under 10 million.
The classification of cities in Australia is based on various systems defined by the Australian Bureau of Statistics. The eight Greater Capital City Statistical Areas (GCCSA) are unique statistical divisions that represent each state or territory capital city. These are constructed from one or more whole labour market areas. The GCCSA population is the most commonly quoted figure for the population of capital cities.
Below the state and territory level are the Local Government Areas (LGAs), which are the main units of local government in Australia. They may be termed cities, councils, regions, or towns, and they cover around 90% of the nation. Significant Urban Areas (SUA) refer to statistical divisions with populations of over 50,000 people.
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Frequently asked questions
70% of the Australian population is concentrated in the top eight most populous cities. Sydney and Melbourne alone account for 4 in 10 Australians. This is very uncommon, as most countries have a more even distribution of population across multiple cities.
The high population density in these cities has led to increased housing prices. The demand for well-located land is high, while the supply is constrained, resulting in higher property prices.
When compared to the US, Australia has fewer but larger cities. While the US has one city (New York) that is bigger than any Australian city, Melbourne and Sydney are much bigger than famous US cities like Detroit and Chicago.











































