Cities exist because they offer economic and social benefits. People generally come to cities to make money, find a partner, and interact with other humans. Occasionally, we underestimate this desire to cluster — which was the case during our recent pandemic. But the reality is that this is a human tendency that has existed for thousands of years and that also happens to be accelerating.

I mean, as recent as 1980, only about 40% of the world's population was living in an urban area. Today, this figure is closer to 60%, and by 2080, it is predicted that up to 90% of the people on this planet will live in an urban center.

This will take the number of megacities with over 10 million people from 3 (in 1980) to nearly 100 in 2080 (according to projections from UN-Habitat). But here's the thing: cities help people become wealthier, but once people become wealthier, they tend to have far fewer children. This inverse correlation is well established. So intuitively, there should be limits to the growth we are seeing.

Here's an interesting article from CityLab by Greg Clark, Borane Gille and Jennifer Dolynchuk that pegs this peak somewhere around 2080. We will still remain extremely urban, but overall our population will start to decline. And for some cities, like Tokyo, this decline has already started.

Charts via CityLab

The United Nations recently released its 2015 version of World Population Prospects. It looks as if they put out and revise this report every 5 years.

The Economist then took some of their data and assembled it into the following charts:

It’s obviously extremely difficult to predict what will happen in the world by 2100, but to the extent that forecasting is possible, the world’s population is expected to reach somewhere around 11.2 billion people. Today it’s 7.3 billion.

The bulk of this growth is expected to happen first in Africa, and then in Asia. By 2100, Africa’s share of the global population is expected to grow to 39% and Asia’s share is expected to decline to 44%.

If you’ve been following population trends, most of this shouldn’t come as a surprise to you. The meaningful population growth happening in the world today is happening in the developing world. 

That’s why architects, such as Rem Koolhaas, have been studying cities like Lagos (Nigeria) since the late 1990s and early 2000s. Below is a photo from a book/research project that I love called Mutations (2000). I pulled it from my bookshelf this morning.

It’s interesting to think about what all of this will mean for the global economy and for global governance. 

The United States is about to be alone when it comes to advanced economies with a globally competitive population. Europe is shrinking, which leads me to believe that a strong EU is likely important. And we now have lots of megalopolises with big populations, but with very low income levels.

Nigeria is the largest economy in Africa, but per capita income is somewhere around $3,000.

Cities exist because they offer economic and social benefits. People generally come to cities to make money, find a partner, and interact with other humans. Occasionally, we underestimate this desire to cluster — which was the case during our recent pandemic. But the reality is that this is a human tendency that has existed for thousands of years and that also happens to be accelerating.

I mean, as recent as 1980, only about 40% of the world's population was living in an urban area. Today, this figure is closer to 60%, and by 2080, it is predicted that up to 90% of the people on this planet will live in an urban center.

This will take the number of megacities with over 10 million people from 3 (in 1980) to nearly 100 in 2080 (according to projections from UN-Habitat). But here's the thing: cities help people become wealthier, but once people become wealthier, they tend to have far fewer children. This inverse correlation is well established. So intuitively, there should be limits to the growth we are seeing.

Here's an interesting article from CityLab by Greg Clark, Borane Gille and Jennifer Dolynchuk that pegs this peak somewhere around 2080. We will still remain extremely urban, but overall our population will start to decline. And for some cities, like Tokyo, this decline has already started.

Charts via CityLab

The United Nations recently released its 2015 version of World Population Prospects. It looks as if they put out and revise this report every 5 years.

The Economist then took some of their data and assembled it into the following charts:

It’s obviously extremely difficult to predict what will happen in the world by 2100, but to the extent that forecasting is possible, the world’s population is expected to reach somewhere around 11.2 billion people. Today it’s 7.3 billion.

The bulk of this growth is expected to happen first in Africa, and then in Asia. By 2100, Africa’s share of the global population is expected to grow to 39% and Asia’s share is expected to decline to 44%.

If you’ve been following population trends, most of this shouldn’t come as a surprise to you. The meaningful population growth happening in the world today is happening in the developing world. 

That’s why architects, such as Rem Koolhaas, have been studying cities like Lagos (Nigeria) since the late 1990s and early 2000s. Below is a photo from a book/research project that I love called Mutations (2000). I pulled it from my bookshelf this morning.

It’s interesting to think about what all of this will mean for the global economy and for global governance. 

The United States is about to be alone when it comes to advanced economies with a globally competitive population. Europe is shrinking, which leads me to believe that a strong EU is likely important. And we now have lots of megalopolises with big populations, but with very low income levels.

Nigeria is the largest economy in Africa, but per capita income is somewhere around $3,000.