Mapping the World’s New Megacities in 2030
The Chart of the Week is a weekly Visual Capitalist feature on Fridays.
Rapid urbanization is one of the major forces shaping our global economic future.
A century ago, it was almost unfathomable that any person would want to live in a city with 10 million other people, but by the 1930s, New York City was the first metropolitan area to pass the mark. Fast forward to today, and there are 33 urban areas that meet the definition of a “megacity” spread throughout the globe.
It’s true that many of these megacities have been global centers for a long time – think cities like London, Tokyo, Los Angeles, and Paris – but we are now entering an era in which new megacities are cropping up every other year, including ones that have less familiar names and backstories.
The Megacity Landscape
Today’s chart is based on a forecast from Euromonitor International, outlining how the megacity landscape will shift in the coming years.
It focuses on the 39 megacities expected by the year 2030, when they will house 9% of the global population and contribute 15% of the world’s GDP. These same megacities will take up about 3% of global land mass.
New Megacities by 2030
Just over a decade from today, there will be five new megacities in developing countries, and one from a developed market:
The Windy City has been on the cusp of the megacity mark for some time, and it will finally hit 10 million inhabitants in the coming years. In 2030, it will have by far the biggest GDP of all new megacities, at $596 billion (constant 2017 prices).
The high-altitude Colombian capital will join the ranks of other Latin American megacities like Rio de Janeiro, São Paulo, Mexico City, Lima, and Buenos Aires. It will have a $109 billion economy (constant 2017 prices) by this time.
This is the entry to the list with the fastest-growing population. Between 2017-2030, the city will increase its residents by 60% – but it will still be nowhere as big as Cairo, which will be Africa’s biggest megacity at 29.8 million people.
This city, which is on the Bay of Bengal in eastern India, will be the most dense of all new megacities by 2030. Chennai’s economy, however, will be $50 billion (constant 2017 prices) – which is just 1/12 the size of Chicago’s.
Iraq’s biggest city already has close to 8 million inhabitants, but by 2030 it will get to the double digits thanks to its impressive population growth rate.
Dar es Salaam
The most populous city in Tanzania is growing almost as fast as Luanda – and on top of that, it has the fastest-growing (and smallest) GDP of the six new megacities. This isn’t the first time the city’s name has come up in a projection like this, as the Global Cities Institute sees it being the third most populous city in the world further down the line.
What other interesting things are projected to happen to key urban centers?
- Jakarta is anticipated to be the biggest megacity of all in 2030 with 35.6 million people
- Tokyo will fall from the top spot, as an aging population translates to negative population growth
- Osaka will be the oldest megacity with 31% of the population aged 65+
- Lagos will be the fastest-growing city overall in the 2017-2030 timeline
- Roughly a dozen cities will double their economies over this timeframe, led by Dhaka, Manila, and Bangalore
When it comes to global urbanization, the only constant is change – and massive metropolises that seem unfathomable today could be much more commonplace down the road.
The Future of 5G: Comparing 3 Generations of Wireless Technology
See how 5G compares to older iterations of wireless technology, and why it’s poised to change the way the modern world uses data.
The Future of 5G: Comparing 3 Generations of Wireless Technology
Wireless technology has evolved rapidly since the turn of the century. From voice-only 2G capabilities and internet-enabled 3G, today’s ecosystem of wireless activity is founded on the reliable connection of 4G.
Fifth-generation wireless network technology, better known as 5G, is now being rolled out in major cities worldwide. By 2024, an estimated 1.5 billion mobile users─which account for 40% of current global activity─will be using 5G wireless networks.
Today’s chart highlights three generations of wireless technology in the 21st century, and the differences between 3G, 4G, and 5G networks.
5G: The Next Great Thing?
With over 5 billion mobile users worldwide, our world is growing more connected than ever.
Data from GSMA Intelligence shows how rapidly global traffic could grow across different networks:
- 2018: 43% of mobile users on 4G
- 2025: 59% of mobile users on 4G, 15% of mobile users on 5G
But as with any new innovation, consumers should expect both positives and negatives as the technology matures.
- IoT Connectivity
5G networks will significantly optimize communication between the Internet of Things (IoT) devices to make our lives more convenient.
- Low latency
Also known as lag, latency is the time it takes for data to be transferred over networks. Users may see latency rates drop as low as one millisecond.
- High speeds
Real-time streaming may soon be a reality through 5G networks. Downloading a two-hour movie takes a whopping 26 hours over 3G networks and roughly six minutes on 4G networks─however, it’ll only take 3.6 seconds over 5G.
- Distance from nodes
Walls, trees, and even rain can significantly block 5G wireless signals.
- Requires many nodes
Many 5G nodes will need to be installed to offer the same level of coverage found on 4G.
- Restricted to 5G-enabled devices
Users can’t simply upgrade their software. Instead, they will need a 5G-enabled device to access the network.
Global 5G Networks
5G still has a way to go before it reaches mainstream adoption. Meanwhile, countries and cities are racing to install the infrastructure needed for the next wave of innovation to hit.
Since late 2018, over 25 countries have deployed 5G wireless networks. Notable achievements include South Korea, which became the first country globally to launch 5G wireless technology in April 2019. Switzerland boasts the highest number of 5G network deployments, currently at 225 and counting.
To date, China has built roughly 350,000 5G sites─compared to the less than 20,000 in the U.S.─and plans to invest an additional US$400 billion in infrastructure by 2023. Chinese mobile providers plan to launch 5G services starting in 2020.
What Does This Mean For 4G?
4G isn’t going anywhere anytime soon. As 5G gradually rolls out, 4G and 5G networks will need to work together to support the wave of IoT devices entering the market. This network piggybacking also has the potential to expand global access to the internet in the future.
The race to dominate the wireless waves is even pushing companies like China’s Huawei to explore 6G wireless innovation─before they’ve even launched their 5G networks.
Which Countries Have the Most Wealth Per Capita?
How do the rankings of the world’s most affluent countries change when using different metrics to measure wealth per capita?
Which Countries Have the Most Wealth Per Capita?
Our animated chart this week uses data from the ninth Credit Suisse Global Wealth report, which ranks countries by average wealth, calculated as gross assets per adult citizen.
While using such a metric certainly gives a quick snapshot of wealth per capita, it doesn’t necessarily show the complete picture.
Some argue, for example, that calculating the mean doesn’t factor in the gap between the richest and poorest in a population—also known as wealth inequality. For this reason, we’ve compared this number to median wealth for each country, providing a separate angle on which countries really have the most wealth per capita.
Mean or Median: Which Makes More Sense?
Below, we’ve visualized a hypothetical example of two groups of people, each earning various sums of money, to show how average (mean) and median calculations make a difference.
What can we observe in both datasets?
- Total wealth: $2,000
- Total people: 15 people
- Average wealth: $2,000 ÷ 15 = $133
However, that’s where the similarities end. In the first group, wealth is distributed more evenly, with the disparity between the lowest-paid and highest-paid being $300. The median wealth for this group reaches $100, which is close to the average value. In the second group, this gap climbs to $495, and the median wealth drops sharply to only $30.
Scaling up this example to the true wealth of nations, we can see how the median wealth provides a more accurate picture of the typical adult, especially in societies that are less equal.
Let’s see how this shakes out when ranking the world’s most affluent countries.
Ranking Top Contenders on Wealth per Capita
When it comes to wealth per capita, it’s clear that Australia and Switzerland lead the pack. In fact, the data shows that both nations top the lists for both mean and median wealth.
However, both nations also have the highest absolute household debt-to-GDP ratios in the world: in 2018, Switzerland’s levels reached nearly 129%, while Australia followed behind at 120%.
Here is a full ranking of the top 20 countries by mean and median wealth:
|Rank||Country||Mean wealth per adult||Country||Median wealth per adult|
|#1||🇨🇭 Switzerland||$530,244||🇦🇺 Australia||$191,453|
|#2||🇦🇺 Australia||$411,060||🇨🇭 Switzerland||$183,339|
|#3||🇺🇸 United States||$403,974||🇧🇪 Belgium||$163,429|
|#4||🇧🇪 Belgium||$313,045||🇳🇱 Netherlands||$114,935|
|#5||🇳🇴 Norway||$291,103||🇫🇷 France||$106,827|
|#6||🇳🇿 New Zealand||$289,798||🇨🇦 Canada||$106,342|
|#7||🇨🇦 Canada||$288,263||🇯🇵 Japan||$103,861|
|#8||🇩🇰 Denmark||$286,712||🇳🇿 New Zealand||$98,613|
|#9||🇸🇬 Singapore||$283,118||🇬🇧 United Kingdom||$97,169|
|#10||🇫🇷 France||$280,580||🇸🇬 Singapore||$91,656|
|#11||🇬🇧 United Kingdom||$279,048||🇪🇸 Spain||$87,188|
|#12||🇳🇱 Netherlands||$253,205||🇳🇴 Norway||$80,054|
|#13||🇸🇪 Sweden||$249,765||🇮🇹 Italy||$79,239|
|#14||🇭🇰 Hong Kong||$244,672||🇹🇼 Taiwan||$78,177|
|#15||🇮🇪 Ireland||$232,952||🇮🇪 Ireland||$72,473|
|#16||🇦🇹 Austria||$231,368||🇦🇹 Austria||$70,074|
|#17||🇯🇵 Japan||$227,235||🇰🇷 South Korea||$65,463|
|#18||🇮🇹 Italy||$217,727||🇺🇸 United States||$61,667|
|#19||🇩🇪 Germany||$214,893||🇩🇰 Denmark||$60,999|
|#20||🇹🇼 Taiwan||$212,375||🇭🇰 Hong Kong||$58,905|
The United States boasts 41% of the world’s millionaires, but it’s clear that the fruits of labor are enjoyed by only a select group—average wealth ($403,974) is almost seven times higher than median wealth ($61,667). This growing inequality gap knocks the country down to 18th place for median wealth.
The Nordic countries of Norway and Denmark can be found in the top ten for average wealth, but they drop to 12th place ($80,054) and 19th place ($60,999) respectively for median wealth. Despite this difference, these countries also provide a strong safety net—including access to healthcare and education—to more vulnerable citizens.
Finally, wealth in Japan is fairly evenly distributed among its large middle class, which lands it in seventh place on the median wealth list at $103,861. One possible reason is that the pay gap ratio between Japanese CEOs and the average worker is much lower than other developed nations.
With reducing income inequality as a priority for many countries around the world, how might this list change in coming years?
Footnote: All data estimates are using mid-2018 values, and reflected in US$.
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