| Rank | Name | Country | Total Population (millions) |
|---|---|---|---|
| 1 | Tokyo | Japan | 34.5 |
| 2 | Guangzhou | China | 25.8 |
| 3 | Jakarta | Indonesia | 25.3 |
| 4 | Seoul | South Korea | 25.3 |
| 5 | Shanghai | China | 25.3 |
| 6 | Mexico City | Mexico | 25.2 |
| 7 | Delhi | India | 23.0 |
| 8 | New York City | United States | 21.5 |
| 9 | São Paulo | Brazil | 21.1 |
| 10 | Mumbai | India | 20.8 |
| 11 | Manila | Philippines | 20.7 |
| 12 | Karachi | Pakistan | 17.4 |
| 13 | Los Angeles | United States | 17.0 |
| 14 | Osaka | Japan | 16.8 |
| 15 | Beijing | China | 16.4 |
| 16 | Moscow | Russia | 16.2 |
| 17 | Cairo | Egypt | 15.7 |
| 18 | Calcutta | India | 15.7 |
| 19 | Buenos Aires | Argentina | 14.3 |
| 20 | Dacca | Bangladesh | 14.0 |
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(Source: http://citypopulation.de/world/Agglomerations.html, April 1, 2012.) |
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