Countries
Visualizing Population Density Patterns in Six Countries
As of 2022, Earth has 8 billion humans. By 2050, the population is projected to grow to 10 billion.
In the last 100 years, the global population more than quadrupled. But none of this growth has been evenly spread out, including within countries.
This series of 3D maps from Terence Teo, an associate professor at Seton Hall University, renders the population density of six countries using open-source data from Kontur Population. He used popular programming language R and a path-tracing package, Rayshader, to create the maps.
France and Germany: Population Density Spikes and Troughs
Let’s take a look at how the population spreads out in different countries around the world. Click the images to explore higher-resolution versions.
France is the world’s 7th largest economy and second-most-populous country in the EU with 65 million people. But a staggering one-fifth of the French population lives in Paris and its surrounding metro—the most populous urban area in Europe.
Many residents in the Paris metropolitan area are employed in the service sector, which makes up one-third of France’s $2.78 trillion gross domestic product.
Unlike France, Germany has many dense cities and regions, with Berlin, Munich, Stuttgart, and Cologne all having over a million residents. Berlin is the most populated at 3.5 million residents in the city proper, and 6 million in the wider urban area.
That said, the relatively recent reunification of West and East Germany in 1991 meant that post-WWII growth was mostly concentrated in West Germany (and West Berlin).
Italy and Chile: Coast to Coast
In Italy, another phenomenon affects population density and urban development—a sprawling coastline.
Despite having a large population of 59 million and large metropolitan areas throughout, Italy’s population spikes are closer to the water.
The port cities of Genoa, Napoli, and Palermo all have large spikes relative to the rest of the country, as does the capital, Rome. Despite its city center located 15 miles inland from the sea, it extends to the shore through the district of Ostia, where the ancient port of Rome existed.
Meanwhile in Chile, stuck between the Andes to the east and the Pacific Ocean to the west, population spikes corroborate with its many port towns and cities.
However, the country is more concentrated than Italy, with 40% of its residents congregating around the capital of Santiago.
Turkey and Canada: Marred by Mountains and Climes
Though Chile has difficulties with terrain, it is relatively consistent. Other countries have to attempt to settle many different climes—regions defined by their climates.
Mountains to the south and east, a large, semi-arid plateau, and even a small desert leave few centers of urban growth in Türkiye.
Predictably, further west, as the elevation comes down to the Aegean and Mediterranean Seas, population spikes begin to heighten. The largest of course is the economic and cultural hub of Istanbul, though the capital Ankara is also prominent with more than 5 million residents.
In Canada, the Rocky Mountains to the west and freezing cold temperatures in the center and north account for the large country’s relative emptiness.
Though population spikes in Western Canada are growing rapidly, highly populous urban centers are noticeably concentrated along the St. Lawrence River, with the Greater Toronto Area accounting for more than one-sixth of the country’s 39 million people.
Increasing Urbanization
According to the World Bank, more than half of the world’s population currently lives in cities, and that trend is only growing.
By 2050, 7 out of 10 people are projected to live in cities. This congregation makes cities a beehive of productivity and innovation—with more than 80% of the world’s GDP being generated at these population centers.
It’s in this context that mapping and studying urban development becomes all the more important, particularly as policymakers try their hand at sustainable urban planning.
As Teo puts it:
“By showing where people are (and are not), they show us where political and economic power is concentrated, and perhaps where and who our governments represent.”
This article was published as a part of Visual Capitalist's Creator Program, which features data-driven visuals from some of our favorite Creators around the world.
Countries
Mapped: Africa’s Population Density Patterns
We map out Africa’s population density, spotlighting the continent’s most populous countries and cities.
Mapped: Africa’s Population Density Patterns
This was originally posted on our Voronoi app. Download the app for free on iOS or Android and discover incredible data-driven charts from a variety of trusted sources.
Africa, the world’s second largest continent, spans over 30 million km2, home to the not only world’s biggest desert but also the second-largest tropical rainforest, and of course, approximately 1.4 billion people.
In this infographic, we map out the continent’s population density patterns. It’s a prime example of how humans congregate near fresh water and around the edges of natural obstacles.
This population density data comes from the Gridded Population of the World dataset created by the Center for International Earth Science Information Network (CIESIN) hosted by NASA’s Socioeconomic Data and Applications Center (SEDAC).
Ranked: Most Populous African Countries
Africa’s second largest economy, Nigeria, is also its most populous: more than 220 million people live in this diverse West African country with 250 ethnic groups, speaking over 500 different languages.
And the nation is only growing. By 2100, it’s estimated that the Nigerian population could be more than three-fold its current size, at nearly 800 million residents, becoming the second-most populous country in the world.
Rank | Country | Population |
---|---|---|
1 | 🇳🇬 Nigeria | 224M |
2 | 🇪🇹 Ethiopia | 127M |
3 | 🇪🇬 Egypt | 112M |
4 | 🇨🇩 DRC | 102M |
5 | 🇹🇿 Tanzania | 67M |
6 | 🇿🇦 South Africa | 59M |
7 | 🇰🇪 Kenya | 55M |
8 | 🇺🇬 Uganda | 49M |
9 | 🇸🇩 Sudan | 48M |
10 | 🇩🇿 Algeria | 46M |
Source: UN Department of Economic and Social Affairs, World Population Prospects. (2022)
Across the continent, along its eastern side, Ethiopia, is the second-most populous country on the continent. Unlike Nigeria—which has nearly 20 cities with at least half a million residents—more than three-quarters of Ethiopia’s 127 million people live in rural communities.
Ranked third, Egypt (112 million) is the only North African country in the top five by population. The Democratic Republic of the Congo (DRC) comes in fourth (102 million), with Tanzania (67 million) rounding out the top five.
Ranked: Fastest Growing African Countries By Population
In the year 1900, Africa accounted for 9% of the world’s population. Currently its share stands close to 18%. By 2025, the International Monetary Fund (IMF) expects one in four people in the world to live in Africa, and says the continent’s demographic transition has the power to “transform the world.”
The most populous African countries (DRC, Tanzania, Ethiopia, Nigeria, and Egypt) will contribute the lion’s share to this growth of course, but within the continent, other countries are also seeing relatively rapid population growth.
Rank | Country | Growth Rate |
---|---|---|
1 | 🇸🇸 South Sudan | 4.78% |
2 | 🇳🇪 Niger | 3.66% |
3 | 🇧🇮 Burundi | 3.59% |
4 | 🇬🇶 Equatorial Guinea | 3.36% |
5 | 🇦🇴 Angola | 3.34% |
6 | 🇧🇯 Benin | 3.31% |
7 | 🇺🇬 Uganda | 3.22% |
8 | 🇨🇩 DRC | 3.13% |
9 | 🇹🇩 Chad | 3.05% |
10 | 🇲🇱 Mali | 2.93% |
Source: CIA World Factbook.
In South Sudan, the world’s newest country, the population is growing at nearly 5% every year. The broader sub-Saharan population meanwhile is growing at half that rate. Aside from a higher fertility rate, the country is also seeing an influx of refugees from conflict areas in neighboring Sudan.
While no other African nation is quite matching South Sudan’s population growth, several of Africa’s poorer economies are also posting an annual population increase of more than 3% including Niger, Burundi, and Chad.
Ranked: Most Populous African Cities
About half of Africa lives in urban areas, which is less than the global average of 57%. The 10 most populous cities on the continent together account for about 115 million people, more than 1.5x the UK’s total population.
Egypt’s capital, Cairo, built along the banks of the Nile, is home to more than 22 million residents, and ranks as Africa’s largest city. This bustling metropolis has stood as an important trade juncture between continents for more than 1,400 years—and is still somehow one of Egypt’s younger cities.
Rank | City | Country | Population |
---|---|---|---|
1 | Cairo | 🇪🇬 Egypt | 22.2M |
2 | Lagos | 🇳🇬 Nigeria | 21.4M |
3 | Kinshasa | 🇨🇩 DRC | 15.0M |
4 | Johannesburg | 🇿🇦 South Africa | 14.8M |
5 | Luanda | 🇦🇴 Angola | 9.0M |
6 | Khartoum | 🇸🇩 Sudan | 6.9M |
7 | Abidjan | 🇨🇮 Cote d'Ivoire | 6.6M |
8 | Nairobi | 🇰🇪 Kenya | 6.6M |
9 | Accra | 🇬🇭 Ghana | 6.4M |
10 | Dar es Salaam | 🇹🇿 Tanzania | 6.0M |
Source: Urban agglomerates (2023) Citypopulation.de.
Down south, across the Sahara desert, and near the shores of the Atlantic, Nigeria’s former capital Lagos has slightly more than 21 million people. The city’s name comes from the numerous surrounding lagoons, and its original name in Yoruba, “Eko”, also means “lake.” Population estimates for the city are often disputed because of several different administrative regions, but also because of how fast Lagos is growing: it’s estimated 2,000 new residents move in every day.
Kinshasa, the capital of the DRC ranks third with about 15 million residents, and is slated to become the fourth largest city in the world, with 35 million people, by 2050.
Johannesburg, South Africa (15 million), and Luanda, Angola (9 million) round out the top five most populous African cities.
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