As of this writing, Earth is a few million people short of the 7.5-billion mark. Considering that we add about 200,000 people to the planet every day, you may be reading this as the World Population Clock passes that symbolic milestone. Or, more likely, with that figure already firmly in the rear-view mirror.
World Population is old-school Big Data: in that category of figures too big to comprehend, like the size of the universe or of U.S. federal debt. But there are a few ways to translate population data into an easily graspable visual. Some of which have figured on this blog before.
- The cartogram: countries are inflated or deflated to show the difference in population size. See #96.
- Rearranged countries: the country with the biggest population moves into the biggest country, the second-most populous country takes over the second-biggest country, and so forth. See #490.
- Latitudinal and longitudinal: world population plotted out along the north-south and east-west axes. See #563.
This map is a variant of the longitudinal map. It divides the east-west distribution of humanity into ten slices of equal population. Each one is home to 750 million people – a bit less or a lot more, depending on when you are reading this.
The result is remarkable, not just because it manages to give a population schematic the look and feel of a time zone map, but also because it merges the north, with its mature economies and ageing populations, to the south, where population growth tends to cancel out a large part of overall GDP growth, leaving per-capita GDP stagnant and the locals poor. That also turns it into a road map of sorts for the migratory pressures that are currently animating public debate around the world.
- The U.S. almost has North America to itself, incorporates most of the Caribbean (although the Windward and Leeward islands fall outside the Green Zone) and the western half of South America.
- Despite incorporating the UK, France and Spain, the main language in the Blue Zone is Portuguese, thanks to the inclusion of almost all of Brazil (210 million Portuguese-speakers).
- The Red Zone contains the central part of Europe, with Germany (83 million), Italy (61 million) and Poland (39 million) as population heavyweights. But the centre of gravity is in Africa, with (most of) Nigeria (188 million), the DR Congo (82 million) and South Africa (55 million) in the Zone.
- The Yellow Zone is the narrowest yet, indicating a higher population density. Despite containing Moscow, the continent's largest city (with a metro area of 18 million), this Zone is less European than the Red one. European Russia is less densely populated than the more western parts of the continent, and is only half included in the Red Zone. The most populated country in the Red Zone might surprise you. It's Ethiopia (105 million), ahead of Egypt (93 million) and Turkey (80 million). Tanzania (57 million), Kenya (49 million) and Uganda (42 million) together constitute an Anglophone bloc in East Africa of nigh on 150 million people.
- The next Blue Zone is dominated by Pakistan (202 million) and Iran (83 million), but that generous western slice of India will certainly have helped a lot too – more than the Empty Quarter of Arabia, or the underpopulated expanses of the 'stans in Central Asia.
- The next Red Zone is so narrow because it takes in the most densely settled parts of India, at 1.3 billion the world's second-most populated country.
- Bangladesh, a tiny part of the next Zone, is one of the most densely populated countries in the word. At 190 million, it has more inhabitants than Russia and Ukraine combined. Thailand's 70 million and Birma/Myanmar's 55 million are not to be sneezed at either.
- The next Zone, again much narrower, contains Java, the most densely populated island in the world (1). Java is about two-thirds the size of Great Britain, but is home to 145 million people, or 57% of all Indonesians.
- The last but one Zone is the narrowest of them all. It runs from empty Siberia to empty Western Australia, but passes through the most densely populated slice of China.
- The final Zone takes in both Koreas, Japan and the Philippines, half of Indonesia, Papua New Guinea, most of Australia and all of New Zealand, plus a the island nations of the western Pacific. Very roomy, compared to the four Zones to the west: even put together, they are a narrower band than the Tokyo one – but they do contain the bulk of humanity: three billion people.
Strange Maps #832
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(1) To be precise: the most densely populated large island in the world. Java has a density of 1,026 inhabitants per km2. The most densely populated island in the world is Santa Cruz del Islote, a tiny islet in Colombia's San Bernardo archipelago. It has an area of only 0.12 km2 but a population of around 1,250. Which gives a density of well over 10,300 inhabitants per km2 (or about 27,000/sq mi).