Megacity population and rank for world cities for the year 1980
| Rank | Megacity | Country | Population |
|---|---|---|---|
| 1 | Tokyo | Japan | 28,548,512 |
| 2 | Kinki M.M.A. (Osaka) | Japan | 17,027,547 |
| 3 | New York-Newark | United States of America | 15,601,401 |
| 4 | Ciudad de México (Mexico City) | Mexico | 13,027,620 |
| 5 | São Paulo | Brazil | 12,089,454 |
| 6 | Buenos Aires | Argentina | 9,919,781 |
| 7 | Los Angeles-Long Beach-Santa Ana | United States of America | 9,511,568 |
| 8 | Mumbai (Bombay) | India | 9,199,543 |
| 9 | Kolkata (Calcutta) | India | 9,100,166 |
| 10 | Rio de Janeiro | Brazil | 8,783,870 |
| 11 | Paris | France | 8,669,349 |
| 12 | Seoul | Republic of Korea | 8,244,351 |
| 13 | Moskva (Moscow) | Russian Federation | 8,136,141 |
| 14 | Chukyo M.M.A. (Nagoya) | Japan | 7,777,328 |
| 15 | Al-Qahirah (Cairo) | Egypt | 7,348,778 |
| 16 | Chicago | United States of America | 7,216,190 |
| 17 | London | United Kingdom | 6,751,196 |
| 18 | Jakarta | Indonesia | 5,984,256 |
| 19 | Manila | Philippines | 5,954,719 |
| 20 | Shanghai | China | 5,927,898 |
| 21 | Delhi | India | 5,587,014 |
| 22 | Beijing | China | 5,366,372 |
| 23 | Tehran | Iran (Islamic Republic of) | 5,079,191 |
| 24 | Karachi | Pakistan | 5,047,815 |
| 25 | Kitakyushu-Fukuoka M.M.A. | Japan | 4,725,626 |
| 26 | Krung Thep (Bangkok) | Thailand | 4,723,143 |
| 27 | Sankt Peterburg (Saint Petersburg) | Russian Federation | 4,644,717 |
| 28 | Philadelphia | United States of America | 4,540,082 |
| 29 | Hong Kong | China, Hong Kong SAR | 4,496,588 |
| 30 | Lima | Peru | 4,437,754 |
Data from UN World Urbanization Prospects