Megacities on a World Map

Megacities are cities that contain one million cities. At least that's what they would be if people knew what mega meant.

It's pretty incredible. Java is also pretty mind-boggling - despite being about 100,000 sq km smaller than Honshu it packs in over 140,000,000 people, the megacity of Jakarta, and several other large cities like Surabaya, Bandung and Yogyakarta.

Java literally has more people on in than all of Russia. All of it. Saint Petersburg to Big Diomede. The largest country in the world has a smaller population than the fifth largest island in Indonesia.

IAB to the rescue, less than an hour after the update

Shenzhen is included in the Guangzhou stats

Xiamen's urban area is above 10 million while city proper is about 4

It’s actually Xiamen-Zhangzhou-Quanzhou / West Coast Strait city cluster, sometimes even includes Fuzhou. The three cities are closely connected, Xiamen is the most famous one.

hm looking at the stats, it doesnt all seem above board. Not a natural curve at all. Things smoothly slope up from 0 to 6% for the amount of people that got a certain amount of questions correct, and then suddenly jumps to 22% for the ones with all questions right. (which looks to be atleast 15% more than expected)

Edit not that I mind getting a low score, before people accuse me of complaininng just because I didnt get more points, I dont really care about them, even if I have gotten 1 or 0 I would ve been fine with that, just decided to look at the stats because I like stats and graphs and wanted to see if I could figure out the actual needed number of correct answers. When I saw a really unanticipated curve (the 100% is allways more than it should be, but haven't often seen Súch a discrepancy)

Breezed through this in a couple of seconds just now. What's so impossible about remembering two cities? You can do it. And there are so many big cities quizzes on this site I think that's why the scores are pretty high on average. I must have typed in Tianjin and Nagoya at least 100 times each coming to this site over the years.

https://www.jetpunk.com/users/wildkrattsisawesome/blog/the-difference-between-city-proper-metro-area-and-urban-area

Xiamen includes Quanzhou and Zhangzhou as well. Quanzhou city proper on itself has more than 9 million people.

Chongqing takes up an area bigger than Austria. It should not be counted.

Chengdu is still missing here. Or maybe it was removed.

i don't think that's typically done on the site because two letters would be a bit too easy (both in terms of guessing and in terms of accidentally guessing it when you're going for lahore or lanzhou or lansing or goodness knows what)

Changsha, Wuhan, Chongqing, Hangzhou, Xi'an, and Bogota were added. Guangzhou gain a whopping 18 million people, so it must have swallowed a bunch of other nearby cities. Chengdu was removed although that was a mistake in the update and should be present :)

Chengdu is the capital of the Sichuan province in China.

But in all seriousness you are correct, Chengdu is missing at 15.2m

Yes - why does Chengdu not feature here?

"for someone whose age is almost 14" bro tried avoiding saying 13

Whatever you can achieve is a good score :)

Instead you get Guangzhou, which is even bigger!

Also, Chengdu is on the empty map version but not here.

Never mind on Harbin. The city is only about 5 million.

For future reference, HCMC works.

Its 70M because it includes Dongguan, Shenzhen etc

Uhh... Austin is wayyy down the list at 2.325 million people and a 2.6% annual change. (As of March 2026.)

At that rate it won't reach 10 million for another log_1.026(10/2.325) = 57 years.

So: first-approximation estimate? 2083.

Yes, but not an urban agglomeration

Some major city clusters in Europe and Asia are the result of a bunch of big cities growing slowly until they (almost) touch instead of one or two big centres causing the surrounding area to turn into suburbs/commuter towns. This means the calculations for what belongs to which urban area will sometimes group cities together that locals would never consider to be part of the same entity. For instance, the Rhine-Ruhr stat here includes the populations of Düsseldorf and Cologne, which very much operate as centres in their own right. Therefore, Rhine-Ruhr is pre-filled to prevent a lot of complaints that it shouldn't actually be considered a single urban area. The same could be said of the figures for cities like Guangzhou or Shanghai, but there's far fewer Chinese users as German ones, so it's less of a concern.