There are approximately how many cities in the world?

Question

There are approximately how many cities in the world?

Answer 1

Appx. 10,000

Answer 2

There are approximately 100 cities with populations over 5 million. There are about 30 cities over 10 million.

Answer 3

Where do you draw the line to call an urban agglomeration as a city? Forget about a 'city' with a population of few thousand.

If it is 10 million 'Megapolises' (let's see)

New York, Los Angeles, Chicago, Mexico city, Buenos Aires, Sao Paulo, London, Paris, Rome, Moscow,Karachi, Mumbai, Delhi, Kolkata, Shanghai, Beijing, Hong kong - Shentzhen, Tientsin, Seoul, Tokyo, Osaka-Kobe, Manila, Jakarta, Cairo.

If you lower the limit to 5 million (roughly a hundred countries have populations less than this figure), you can add a seventy more to make the total a hundred.