The world’s population continues to balloon with experts estimating that by the year 2050, the world will have approximately 20 to 30 billion people.
The world currently has approximately 7.6 billion people with the number expected to be higher especially in developing countries.
In most countries around the world, people move from rural areas to major urban centers, especially cities in such of jobs as well as other social amenities that might not be found in the rural area.
In Kenya for instance, most people reside in Nairobi. Nairobi is estimated to have 4 million people with at least 500,000 people moving into the city each year. Nairobi is the most populated city (town) in Kenya.
In Africa, Cairo, the capital city of Egypt is the most populous with 18.7 million people followed by Lagos in Nigeria with 13.1 million people.
The most populated city in the world is Tokyo with 38.1 million people followed by New Delhi with 25.1 million people. Shanghai has 23.7 million people while Sao Paulo and Mumbai cities have 21.1 million people each while Mexico City has 21 million residents.
Osaka and Cairo have 20.2 and 18.7 million people respectively while New York and Dhaka have 18.5 and 17.6 million people respectively.
Here is s full list of top 20 most populous cities in the world:
Lagos has 13.1 million people while Manila has 12.9 million people. Rio de Janeiro and Guangzhou cities have 12.9 and 12.4 million people respectively.
Los Angeles and Moscow have 12.3 and 12.1 million people respectively while Kinshasa and Tianjin have 11.5 and 11.2 million people respectively. Paris in France has 10.8 million people while Shenzhen has 10.7 million people.
Jakarta and London have 10.3 million people each while Bangalore and Lima have 10.3 and 9.8 million people respectively. Chennai and Seoul have 9.8 and 9.7 million people respectively.