How many cities in the world have a population exceeding 5 million people ?
There are 81 cities in the world with a population exceeding 5 million people.
There are 81 cities in the world with a population exceeding 5 million people, according to 2018 estimates by the United Nations. The U.N. figures include a mixture of city proper, metropolitan area, and urban area.
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(Optional) Context information is below.
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There are 81 cities in the world with a population exceeding 5 million people.
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Answer the following query.
How many cities in the world have a population exceeding 5 million people ?

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There are 81 cities in the world with a population exceeding 5 million people, according to 2018 estimates by the United Nations. The U.N. figures include a mixture of city proper, metropolitan area, and urban area.
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