
Australia and Japan have vastly different populations, despite their similar-sounding landmass areas. Japan has a population of approximately 124 million people, while Australia's population is around 27 million. This means that Japan's population is nearly five times that of Australia, with 98 million more people living there.
| Characteristics | Values |
|---|---|
| Population of Japan | 124,482,000 |
| Population of Australia | 26,951,000 |
| Japan as % of Australia's population | 462.6% |
| Surface Area of Japan | 377,969 sq km |
| Surface Area of Australia | 7,741,220 sq km |
| Japan as % of Australia's surface area | 4.88% |
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What You'll Learn

Population density
Australia and Japan have vastly different population densities. Japan has a smaller land area than Australia, yet its population is almost four times larger.
Japan's population is estimated to be around 124,482,000 people, while Australia's population is approximately 26,951,000. In terms of land area, Japan is approximately 377,969 square kilometres, while Australia is approximately 7,741,220 square kilometres. This means that Japan is only about 4.88% the size of Australia, yet it has a significantly larger population.
The population density of a country is calculated by dividing the total population by the land area. Using this formula, Japan's population density is approximately 329 people per square kilometre (124,482,000 / 377,969). In contrast, Australia's population density is much lower, at roughly 3.48 people per square kilometre (26,951,000 / 7,741,220).
Japan is known for its high population density, with a significant proportion of its population concentrated in urban areas. The Greater Tokyo Area, which includes the capital city of Tokyo and several surrounding prefectures, is one of the most populous metropolitan areas in the world, with over 37 million residents. Other major cities in Japan, such as Osaka, Nagoya, and Yokohama, also have high population densities.
In contrast, Australia is known for its low population density, with a significant portion of its land area classified as remote or very remote. The majority of Australia's population is concentrated in coastal areas, particularly in the cities of Sydney, Melbourne, Brisbane, and Perth. However, even in these urban centres, the population density is generally lower than that of Japan's major cities.
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Population distribution
Japan and Australia are two countries with vastly different population sizes and distributions. Japan has a population of approximately 124,482,000 people, while Australia's population is significantly smaller at around 26,951,000. This means that Japan's population is almost four times that of Australia's.
When considering the surface area of these two countries, Japan has a smaller landmass than Australia, covering approximately 377,969 square kilometres compared to Australia's 7,741,220 square kilometres. Despite having a smaller land area, Japan manages to accommodate a much larger population, resulting in a higher population density than Australia.
The population distribution within each country is quite different as well. Japan has a more concentrated population, with a large proportion of its citizens residing in urban areas, particularly in the capital city of Tokyo and other major cities. This urbanisation is a significant factor in Japan's high population density. On the other hand, Australia's population is more spread out, with a higher proportion of its citizens living in suburban or rural areas.
The median age of the residents also plays a role in the population distribution. Japan has an ageing population, with a median age of over 40 years, which is among the highest in the world. This older demographic contributes to the concentration of the population in urban centres, where healthcare and other amenities are more accessible. In contrast, Australia has a younger median age, resulting in a more dynamic and dispersed population distribution.
In summary, the population distribution between Japan and Australia differs significantly. Japan, despite its smaller land area, has a much larger population, resulting in a higher population density. The urbanisation, ageing population, and concentration of citizens in metropolitan areas contribute to Japan's unique distribution. Conversely, Australia's population is more dispersed, with a larger proportion of its land area dedicated to rural or suburban living. These factors shape the distinct population distributions of these two countries.
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Population growth
Australia and Japan are two countries with significantly different population sizes. As of 2025, Japan has a population of approximately 124,482,000 people, while Australia's population is around 26,951,000. This means that Japan's population is almost four times larger than that of Australia, with 98.1 million more people living in Japan.
When considering population growth, several factors come into play. One crucial aspect is birth rate, which is the average annual number of births per 1,000 people in the population. A higher birth rate contributes to population growth, and this can be influenced by factors such as fertility rates and the age structure of the population. For example, a country with a higher proportion of people in their childbearing years may experience a higher birth rate, leading to population growth.
Another factor impacting population growth is life expectancy. Countries with higher life expectancies tend to have lower death rates, resulting in a net population increase over time. Improvements in healthcare, sanitation, and access to nutritious food can positively influence life expectancy, leading to population growth. Additionally, immigration patterns can significantly shape population growth. Countries with high immigration rates, where more people enter the country than leave, will experience population growth.
In the case of Japan and Australia, their population growth trends may differ due to various reasons. For instance, Japan has an aging population, with a median age of over 40, which is higher than that of Australia. An aging population can impact the birth rate, as a larger proportion of the population is beyond their childbearing years. Additionally, Japan's population density is much higher, with a significant population concentrated in urban areas, which can influence social and economic factors related to population growth.
Australia, on the other hand, has a younger median age and a lower population density. These factors can contribute to different population growth dynamics. Australia's higher proportion of younger individuals may lead to a higher birth rate, influencing population growth. Additionally, Australia's vast land area and lower population density may present opportunities for urban development and immigration, which can further drive population growth.
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Population demographics
In terms of population, Australia and Japan are vastly different. Australia has a population of approximately 26.1 million people, while Japan's population is significantly higher at about 124.5 million. This means that Japan's population is nearly five times that of Australia's.
When it comes to the median age of residents, Japan tends to have an older population compared to Australia. The median age in Japan is 40 or above, placing it in a similar range to several European countries. On the other hand, Australia's median age is likely to be lower, though the exact figure is unclear.
The population density, or the number of people per square kilometre, further highlights the disparity between the two countries. Japan, with a surface area of 377,915 to 377,969 square kilometres, has a much higher population density than Australia, which spans 7,741,220 square kilometres. This means that Japan faces the challenge of accommodating a large population within a relatively limited geographical area.
In terms of religious demographics, the two countries also differ. Australia is predominantly Christian, while Japan is largely Shinto. These religious differences may influence cultural norms, values, and traditions within each country.
While the above information provides a snapshot of the population demographics of Australia and Japan, it is worth noting that these figures may not capture the full complexity of each country's population dynamics. Factors such as birth rates, life expectancy, immigration patterns, and age distribution can further nuance our understanding of the population trends in these two nations.
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Population decline
Australia and Japan are two countries with vastly different population sizes and demographic trends. As of 2025, Japan has a population of approximately 124,482,000 people, while Australia's population is significantly smaller, at around 26,951,000. This means that Japan's population is almost four times larger than that of Australia.
When considering the land area of these two countries, the population disparity becomes even more pronounced. Japan, with a land area of approximately 377,969 square kilometres, is only about 4.88% the size of Australia, which spans over 7,741,220 square kilometres. Despite having a much smaller land area, Japan's population is significantly larger than that of Australia.
The population trends in the two countries are also quite different. Japan is facing a significant population decline due to low birth rates and an ageing population. This has led to a shrinking workforce and economic challenges. On the other hand, Australia has a higher birth rate and a younger median age compared to Japan, contributing to a slower population decline or even stable population growth.
To address the issues associated with population decline, Japan has implemented various measures. These include encouraging immigration and promoting policies that support work-life balance, such as improving childcare services and providing parental leave. Japan is also investing in automation and robotics to compensate for its shrinking workforce. In contrast, Australia's larger land area and higher birth rate have provided a buffer against the challenges of population decline, and the country has focused on sustainable growth and managing the impact of population growth on the environment.
In summary, the comparison between Japan and Australia highlights the contrasting population sizes and trends between the two countries. Japan's much larger population and higher population density, coupled with its declining birth rate and ageing population, present unique social and economic challenges. Meanwhile, Australia's smaller population and lower population density, along with its higher birth rate, offer different opportunities and considerations for the country's development and future.
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Frequently asked questions
As of 2025, Japan has a population of 124,482,000, while Australia's population is 26,951,000. That means Japan's population is almost four times that of Australia.
Japan's land area is 377,969 square kilometres, while Australia's is 7,741,220 square kilometres. Australia is therefore over twenty times larger than Japan in terms of land mass.
Despite Australia's larger land mass, Japan has a much higher population density.
Japan's capital city is Tokyo, and the country's main religion is Shinto. Australia's capital is Canberra, and most people follow Christianity.











































