| Entities (and date formed) |
Population |
%[1] |
Notes |
| World |
6,970,700,000 |
100% |
Population clock |
| Asia-Pacific Economic Cooperation (1989) |
2,700,000,000 |
40.95% |
(membership overlap with Association of Southeast Asian Nations, Commonwealth of Nations,Eurasian Economic Community,North American Free Trade Agreement, NATO, OPEC, Shanghai Cooperation Organisation, Mercosur/Mercosul, Union of South American Nations) |
| Commonwealth of Nations (1931) |
1,921,974,000 |
29.15% |
(membership overlap with European Union, European Economic Area, African Union, Arab League, South Asian Association for Regional Cooperation, Union of South American Nations, NATO, and Association of Southeast Asian Nations, Asia-Pacific Economic Cooperation) |
| Shanghai Cooperation Organisation (2001) |
1,519,750,955 |
23.05% |
(membership overlap with CIS and Eurasian Economic Community, Asia-Pacific Economic Cooperation) |
| South Asian Association for Regional Cooperation (1985) |
1,467,255,669 |
22.25% |
(membership overlap with Economic Cooperation Organization) |
| NATO (1949) |
880,978,798 |
13.36% |
(membership overlap with Commonwealth of Nations, European Union, Asia-Pacific Economic Cooperation, North American Free Trade Agreement) |
| African Union (2002) |
850,000,000 |
12.89% |
(membership overlap with Arab League) |
| Association of Southeast Asian Nations (1967) |
558,812,200 |
8.47% |
(membership overlap with Asia-Pacific Economic Cooperation) |
| European Union (1957) |
500,900,000 |
7.6% |
(membership overlap with NATO, Commonwealth of Nations, European Economic Area Eurostat data [2] |
| European Economic Area (1994) |
500,017,119 |
7.58% |
(membership overlap with European Union, European Free Trade Association, and Commonwealth of Nations) |
| North American Free Trade Agreement (1994) |
457,284,932 |
6.93% |
(membership overlap with Mercosur/Mercosul, Commonwealth of Nations, NATO, Asia-Pacific Economic Cooperation) |
| Economic Cooperation Organization (1985) |
405,139,000 |
6.14% |
(membership overlap with South Asian Association for Regional Cooperation) |
| Union of South American Nations (2005) |
379,782,748 |
5.76% |
(membership overlap with Mercosur/Mercosul, Asia-Pacific Economic Cooperation) |
| OPEC (1960) |
369,814,472 |
5.61% |
|
| Arab League (1945) |
339,510,535 |
5.15% |
(membership overlap with African Union) |
| Commonwealth of Independent States (1991) |
277,983,490 |
4.22% |
(membership overlap with Asia-Pacific Economic Cooperation) |
| Mercosur/Mercosul (1991) |
265,212,435 |
4.02% |
(membership overlap with Union of South American Nations, NAFTA, Asia-Pacific Economic Cooperation) |
| Collective Security Treaty Organisation (1994) |
210,000,000 |
3.18% |
(membership overlap with Commonwealth of Independent States, Shanghai Cooperation Organisation, Asia-Pacific Economic Cooperation) |
| Eurasian Economic Community (2001) |
205,693,649 |
3.12% |
(membership overlap with Commonwealth of Independent States and Shanghai Cooperation Organisation, Asia-Pacific Economic Cooperation) |
| ASEAN Free Trade Area (1960) |
12,660,623 |
0.19% |
|
![[1]](http://img479.imageshack.us/img479/5752/economicgroupsri3.png){kind=link}