Karachi, Pakistan (21.1 million people)

The most ancient city in Pakistan now suffers from overpopulation, overburdened infrastructure, and the settlement of migrants in slums of Katchi Abadi, where there is no electricity, running water, and sanitation.

São Paulo, Brazil (21.1 million people)

São Paulo is part of a large which attracts a lot of visitors, both temporary and permanent.

New York, USA (21.5 million people)

The number of New Yorkers is not limited by European settlers, who formed the modern America population backbone. Over the past few decades, many immigrants from Asia and Latin America have also become American citizens.

Delhi, India (23 million people)

Multinational Delhi cordially opens the doors to the international companies employees, as far as many offices are located here. Therefore, the share of foreign citizens in the capital of India is very significant.

Mexico City, Mexico (23.2 million people)

Mexico City has a big number of indigenous people, or American Indians, as well as mestizo, that is, people of Indian-European origin. A lot of immigrants arrive in the Mexican capital from Latin American and European countries.

Shanghai, China (25.3 million people)

The opening of foreign trade and market reforms in the country which began in the middle of the 19th century were the main reasons for the continuing increase in number of the Shanghai population.

Jakarta, Indonesia (25.3 million people)

The rapid population growth in Jakarta, as well as in a number of Asian cities, is explained not only by the demographic explosion but also by a large inflow of peasants, who are exhausted by unemployment and poverty in their villages.

Guangzhou, China (25.8 million people)

Perhaps such an impressive population of this Chinese city can be explained by the fact that Guangzhou has been the beginning of the sea Silk Road for many centuries.

Tokyo, Japan (34.5 million people)

Tokyo along with New York and Mexico City belongs to the first megacities of the world. Over the past 8-10 years, their number has increased dramatically but Tokyo will lead this rating for a long time. Given the functionally connected suburbs, this is the largest city in the world in terms of population.