| rank |
agglomeration, country |
population
1950 est. |
population
1975 est. |
population
2000 est. |
population
2010 est. |
population
2025 est. |
| 1. |
Tokyo, Japan |
11,274,641 |
26,614,733 |
34,449,908 |
36,668,510 |
37,088,417 |
| 2. |
Delhi, India |
1,369,369 |
4,425,964 |
15,730,395 |
22,156,810 |
28,567,826 |
| 3. |
Mumbai (Bombay), India |
2,857,359 |
7,081,960 |
16,085,706 |
20,040,868 |
25,809,977 |
| 4. |
São Paulo, Brazil |
2,334,038 |
9,614,016 |
17,099,204 |
20,262,493 |
21,650,903 |
| 5. |
Dhaka, Bangladesh |
335,760 |
2,221,055 |
10,284,947 |
14,648,354 |
20,935,801 |
| 6. |
Ciudad de México, Mexico |
2,883,228 |
10,689,689 |
18,021,582 |
19,460,212 |
20,712,767 |
| 7. |
New York-Newark, USA |
12,338,471 |
15,880,271 |
17,845,873 |
19,425,069 |
20,636,047 |
| 8. |
Kolkata (Calcutta), India |
4,513,496 |
7,887,768 |
13,058,060 |
15,552,080 |
20,111,977 |
| 9. |
Shanghai, China |
4,300,942 |
5,626,640 |
13,224,272 |
16,575,110 |
20,016,885 |
| 10. |
Karachi, Pakistan |
1,055,380 |
3,989,191 |
10,021,188 |
13,124,793 |
18,725,211 |
| 11. |
Lagos, Nigeria |
325,218 |
1,889,802 |
7,232,595 |
10,577,672 |
15,809,571 |
| 12. |
Kinshasa, Congo, DR of the |
201,905 |
1,481,820 |
5,610,918 |
8,753,869 |
15,040,971 |
| 13. |
Beijing, China |
1,671,365 |
4,827,864 |
9,756,966 |
12,385,263 |
15,018,304 |
| 14. |
Manila, Philippines |
1,543,666 |
4,999,303 |
9,958,263 |
11,628,288 |
14,916,106 |
| 15. |
Buenos Aires, Argentina |
5,097,612 |
8,744,610 |
11,846,990 |
13,074,389 |
13,708,193 |
| 16. |
Los Angeles, USA |
4,045,514 |
8,925,518 |
11,813,546 |
12,762,091 |
13,677,047 |
| 17. |
Al-Qahirah (Cairo), Egypt |
2,493,514 |
6,449,922 |
10,169,986 |
11,001,378 |
13,531,312 |
| 18. |
Rio de Janeiro, Brazil |
2,950,238 |
7,557,382 |
10,802,750 |
11,949,619 |
12,650,430 |
| 19. |
Istanbul, Turkey |
967,497 |
3,600,332 |
8,743,868 |
10,524,625 |
12,108,001 |
| 20. |
Osaka-Kobe, Japan |
4,146,574 |
9,843,689 |
11,165,037 |
11,337,016 |
11,368,185 |
| 21. |
Shenzhen, China |
3,148 |
35,547 |
6,068,838 |
9,005,283 |
11,145,546 |
| 22. |
Chongqing, China |
1,566,966 |
2,401,817 |
6,039,096 |
9,401,170 |
11,065,270 |
| 23. |
Guangzhou, Guangdong, China |
1,049,031 |
1,698,206 |
7,330,099 |
8,883,865 |
10,961,387 |
| 24. |
Paris, France |
6,521,696 |
8,557,844 |
9,739,267 |
10,485,263 |
10,884,344 |
| 25. |
Jakarta, Indonesia |
1,452,000 |
4,813,132 |
8,389,668 |
9,210,211 |
10,849,584 |
source: "World Urbanization Prospects: The 2009 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; Al-Iskandariyah = Alexandria.
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