This phenomenon first originated in developed economies as people moved to work in factories that produced consumer goods at a scale never before seen. Then in the 1950s, developing economies started to follow suit. The results have been staggering, and today a country like China has at least 35 massive cities that each have an economic output comparable to entire countries.

After many decades of urbanization, the portion of people living in urban areas has surpassed the total rural population. This happened in 2007, and we are now in the first window in human history in which more people are city dwellers. So what cities are the meccas for urban migration today? And which are falling out of favor?

The Fastest Growing Cities (2000-2016)

The following interactive and zoomable map was put together by Datawrapper, using data from the United Nations. It lists 500 cities with over 1 million people, and is shaded based on annualized population growth rate between 2000 and 2016. Percent growth corresponds with darker shades of teal, while orange symbolizes negative growth over the timeframe. It’s strongly recommended to explore the map by zooming in on particular regions. Highlighting cities themselves will give you population details for 2000 and 2016, as well as an annualized percentage growth rate. Here are some areas we thought were worth looking at in more detail: North America North America is mostly what one may expect. The biggest cities (NYC, LA, Chicago, Toronto) aren’t changing too fast, while some cities in the Rust Belt (Detroit, Cleveland, Pittsburgh) have slightly negative growth rates. Austin, TX and Charlotte, NC seem to be the fastest growing cities in the U.S., overall. South America Colombia’s Bogotá stands out as the city in South America growing at the most blistering pace. It gained 3.6 million people in the 2000-2016 year period, good for a 2.8% annual growth rate. China and India These two populous countries are home to many of the dark-shaded circles on the map. It’s worth looking at an additional screenshot here (just in case if you haven’t zoomed in above).

Look at the coast of China – it’s dotted with rapidly expanding cities. Incredibly, in the 16-year span of data, some of these cities have doubled in terms of population. Others like Xiamen have tripled in size. Shanghai alone has gained 10.5 million people in this span of time. In India, the fastest growing cities are in the south, where there are at least 10 large cities that have roughly doubled in size. Delhi, which is in the north, has added nearly 11 million inhabitants over the same stretch. Africa In Africa, we see the names of many of the cities that are projected to be the world’s largest megacities by 2100. Lagos in Nigeria has doubled to nearly 14 million people between 2000-2016, and it is expected to explode to 88.3 million people by 2100 to be the world’s most populous city overall. Dar es Salaam (Tanzania) and Kinshasa (DRC) are two other places that are set to grow rapidly by 2100, rounding out the list of the world’s three most populous megacities.

on A statement that is as profound as it is banal. In other words, when we do history, we’re a bit like tourists. If we really want to understand the past, we have to think like a local. The infographic above, Aspects of Principal Exports of Chinese Goods to Foreign Countries, is the first in a series that we’re calling Vintage Viz, which presents a historical visualization along with the background and analytical tools to make sense of it. Today, the People’s Republic of China is the second largest economy in the world, a permanent member of the UN Security Council, and a growing military power. But at the dawn of the 20th century, things were much, much different.

Opium and the Opening of China to the West

Early Sino-Western trade was restricted by the Qing emperors to three ports, and after 1757, just one, in what became known as the Canton System. This name came from the one remaining port city of the same name, present-day Guangzhou. Foreign trade was tightly monitored and subject to stiff tariffs, and Western traders chafed under these restrictions. So when in 1839, Chinese authorities moved to shut down opium smuggling—an important source of profit for foreign merchants—Western powers saw their chance and used the pretext to revise the terms of trade by force. In what became known as the Opium Wars, 1839-1842 and 1856-1860, first Great Britain and then an Anglo-French alliance defeated imperial China and imposed punitive treaties that included indemnities and lowered tariffs, but also expanded the number of ports open to foreign traders, first to five and by 1911, to more than 50.

Westerners were exempted from local laws, Christian missionaries were allowed to proselytize freely, and the opium trade was legalized. Hong Kong was also ceded to Great Britain at this time. The Treaty Port Era, also known as the Century of Humiliation, was perhaps too much for the country to bear. The weakened central government was beset by popular unrest, including the Taiping Rebellion (1850–64), which killed 20 million people, and the Boxer Rebellion (1899-1901), so-named for the secret society that led the movement, the Righteous and Harmonious Fists. Eventually, the last Chinese emperor was deposed and a republic declared in 1911. Nevertheless, the government was too weak to impose its will, and was repeatedly challenged by warlords. So as we approach the outbreak of the First World War in 1914, and the period covered by our visualization, we find China weakened internally by civil strife, and externally by Western powers.

The History of this Century-Old Pie Chart

Aspects of Principal Exports of Chinese Goods to Foreign Countries captures Chinese exports for 1914, and comes from The New Atlas and Commercial Gazetteer of China: A Work Devoted to Its Geography & Resources and Economic & Commercial Development. Originally published in 1917 and edited by Edwin J. Dingle for the Far Eastern Geographical Establishment, the volume contains a wealth of data for the period. According to the book’s Preface, it “seeks to give all the information that is essential to the business-man in regard to a country… about which less is known than in regard to any similar area in the world.” The visualization breaks down total Chinese exports for 1914 in haikwan taels (hk. tls.), a unit of silver currency used to collect tariffs. In 1907, one haikwan tael was worth $0.79 U.S. dollars. Official figures come from the Chinese Maritime Customs Service. This was set up by foreign consuls after the First Opium War to collect tariffs to guarantee the payment of treaty indemnities. Exports in 1914 represented 345 million hk. tls., a 14.4% decrease from 1913, likely owing to the outbreak of the First World War that same year. Apart from “Other Metals and Minerals, Sundries, etc,” which served as a catch-all category, the largest categories were silks and teas of various types, representing 22.6% and 10.4% of total exports respectively. Below are some more details that emerge from this visualization.

All the Tea in China

The Chinese tea trade was the subject of another visualization in the Atlas. It shows that China had been steadily losing ground to British India. Between 1888-1892 Chinese exports to Great Britain were 242 million pounds against India’s 105 million pounds. By 1912-1913, India had surpassed China to export 279 million pounds against 198 million pounds. In 1914, the majority of Chinese exports went to Russia, 902,716 piculs in all. A picul is equal to “as much as a man can carry on a shoulder-pole” or about 133 pounds.

The Silk Road to Profits

Silk has long been in demand in the West as a luxury good, giving its name to the overland trade route that connected East and West for centuries: the Silk Road. In 1914, China was the largest producer and exporter of silks in the world. On an annual basis, China averaged 14 million pounds, compared to the number two spot, Japan, at 11 million pounds, and number three, Italy, at 9 million pounds. Together, these three controlled 81.7% of the global silk trade.

The Opium of the Masses?

The opium trade, the pretext that opened China to foreign trade, was still big money in 1914. A total of 37 million hk. tls. were imported in 1914 from India, up 11.9% from 1908. This is actually down from a peak of 41 million hk. tls. in 1913.

In 1907, China signed the Ten Year Agreement with India, which ultimately phased out the opium trade. By 1917 the trade was all but extinguished.

Back to the Future

The Aspects of Principal Exports of Chinese Goods to Foreign Countries is a far cry from the contemporary trade picture. China’s top export in 2021 was in the category “telephones for cellular networks or other wireless networks,” and was worth $147.1 billion. But it’s worth noting that China today is a direct result of this period. The resentment created during the Century of Humiliation would eventually help lead to Mao Zedong, the Long March, and the establishment of the People’s Republic of China. And in 1979, the Chinese central government would set up the first of their own “treaty ports,” in the form of special economic zones, places where foreign companies could set up shop. But this time, it wasn’t foreign powers who were making the rules.

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