| rank |
agglomeration, country |
population
1975 est. |
population
2000 est. |
population
2007 est. |
population
2015 est. |
population
2025 est. |
| 1. |
Tokyo, Japan |
26,615,000 |
34,450,000 |
35,676,000 |
36,371,000 |
36,400,000 |
| 2. |
New York-Newark, USA |
15,880,000 |
17,846,000 |
19,040,000 |
19,974,000 |
20,628,000 |
| 3. |
Ciudad de México, Mexico |
10,690,000 |
18,022,000 |
19,028,000 |
20,189,000 |
21,009,000 |
| 4. |
Mumbai (Bombay), India |
7,082,000 |
16,086,000 |
18,978,000 |
21,946,000 |
26,385,000 |
| 5. |
São Paulo, Brazil |
9,614,000 |
17,099,000 |
18,845,000 |
20,544,000 |
21,428,000 |
| 6. |
Delhi, India |
4,426,000 |
12,441,000 |
15,926,000 |
18,669,000 |
22,498,000 |
| 7. |
Shanghai, China |
7,326,000 |
13,243,000 |
14,987,000 |
17,214,000 |
19,412,000 |
| 8. |
Kolkata (Calcutta), India |
7,888,000 |
13,058,000 |
14,787,000 |
17,039,000 |
20,560,000 |
| 9. |
Dhaka, Bangladesh |
2,221,000 |
10,285,000 |
13,485,000 |
17,015,000 |
22,015,000 |
| 10. |
Buenos Aires, Argentina |
8,745,000 |
11,847,000 |
12,795,000 |
13,432,000 |
13,768,000 |
| 11. |
Los Angeles, USA |
8,926,000 |
11,814,000 |
12,500,000 |
13,160,000 |
13,672,000 |
| 12. |
Karachi, Pakistan |
3,989,000 |
10,019,000 |
12,130,000 |
14,855,000 |
19,095,000 |
| 13. |
Al-Qahirah (Cairo), Egypt |
6,450,000 |
10,534,000 |
11,893,000 |
13,465,000 |
15,561,000 |
| 14. |
Rio de Janeiro, Brazil |
7,557,000 |
10,803,000 |
11,748,000 |
12,775,000 |
13,413,000 |
| 15. |
Osaka-Kobe, Japan |
9,844,000 |
11,165,000 |
11,294,000 |
11,365,000 |
11,368,000 |
| 16. |
Beijing, China |
6,034,000 |
9,782,000 |
11,106,000 |
12,842,000 |
14,545,000 |
| 17. |
Manila, Philippines |
4,999,000 |
9,958,000 |
11,100,000 |
12,786,000 |
14,808,000 |
| 18. |
Moskva (Moscow), Russia |
7,623,000 |
10,016,000 |
10,452,000 |
10,524,000 |
10,526,000 |
| 19. |
Istanbul, Turkey |
3,600,000 |
8,744,000 |
10,061,000 |
11,177,000 |
12,102,000 |
| 20. |
Paris, France |
8,558,000 |
9,692,000 |
9,904,000 |
10,007,000 |
10,036,000 |
| 21. |
Seoul, South Korea |
6,808,000 |
9,917,000 |
9,796,000 |
9,740,000 |
9,738,000 |
| 22. |
Lagos, Nigeria |
1,890,000 |
7,233,000 |
9,466,000 |
12,403,000 |
15,796,000 |
| 23. |
Jakarta, Indonesia |
4,813,000 |
8,390,000 |
9,125,000 |
10,792,000 |
12,363,000 |
| 24. |
Chicago, USA |
7,160,000 |
8,333,000 |
8,990,000 |
9,516,000 |
9,932,000 |
| 25. |
Guangzhou, Guangdong, China |
2,673,000 |
7,388,000 |
8,829,000 |
10,414,000 |
11,835,000 |
source: "World Urbanization Prospects: The 2007 Revision", Population Division, United Nations Department of Economic and Social Affairs.
note: Thành Pho Ho Chí Minh = Ho Chi Minh City = Saigon; Los Angeles = Los Angeles-Long Beach-Santa Ana; Sankt Peterburg = Saint Petersburg;Ciudad de Panamá = Panama City; Ciudad de México = Mexico City.
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