List of regional organizations by population

The following is a list of regional organizations by population.

List
This list is incomplete; you can help by adding missing items with reliable sources.
Flag/LogoEntitiesFoundedPopulationPct of world pop MembersNotes
World7,845,198,000100.00% Population Clock
Asia Cooperation Dialogue20024,317,290,28455.03%  Afghanistan  Bahrain  Bangladesh  Bhutan  Brunei  Cambodia  China  India  Indonesia  Iran  Japan  Kazakhstan  South Korea  Kuwait  Kyrgyzstan  Laos  Malaysia  Mongolia  Myanmar  Nepal  Oman  Pakistan  Philippines  Qatar  Russia  Saudi Arabia  Singapore  Sri Lanka  Tajikistan  Thailand  Turkey  United Arab Emirates  Uzbekistan  Vietnam Membership overlap with ASEAN, SAARC
Shanghai Cooperation Organisation20013,247,750,95541.40%  China  India  Kazakhstan  Kyrgyzstan  Pakistan  Russia  Tajikistan  Uzbekistan Membership overlap with CIS and Eurasian Economic Community, Asia-Pacific Economic Cooperation, South Asian Association for Regional Cooperation
BRICS20083,040,000,00038.75%  Brazil  Russia  India  China  South Africa An association of five major emerging national economies
Asia-Pacific Economic Cooperation19892,700,000,00034.42%  Australia  Brunei  Canada  Chile  China  Hong Kong  Indonesia  Japan  South Korea  Malaysia  Mexico  New Zealand  Papua New Guinea  Peru  Philippines  Russia  Singapore  Taiwan  Thailand  United States  Vietnam 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, African, Caribbean and Pacific Group of States,
Commonwealth of Nations19312,418,964,00030.83%  Antigua and Barbuda  Australia  Bahamas  Bangladesh  Barbados  Belize  Botswana  Brunei  Cameroon  Canada  Cyprus  Dominica  Ghana  Grenada  Guyana  India  Jamaica  Kenya  Kiribati  Lesotho  Malawi  Malaysia  Maldives  Malta  Mauritius  Mozambique  Namibia  Nauru  New Zealand  Nigeria  Pakistan  Papua New Guinea  Rwanda  Saint Kitts and Nevis  Saint Lucia  Saint Vincent and the Grenadines  Samoa  Seychelles  Sierra Leone  Singapore  Solomon Islands  South Africa  Sri Lanka  Swaziland  Tanzania  Tonga  Trinidad and Tobago  Tuvalu  Uganda  United Kingdom  Vanuatu  Zambia Membership overlap with European Union, European Economic Area, African, Caribbean and Pacific Group of States, African Union, South Asian Association for Regional Cooperation, Union of South American Nations, Caribbean Community, CARIFORUM, NATO, and Association of Southeast Asian Nations, Asia-Pacific Economic Cooperation, Small Island Developing States
Regional Comprehensive Economic Partnership20152,041,590,65026.02%  Australia  Brunei  Cambodia  China  Indonesia  Japan  South Korea  Laos  Malaysia  Myanmar  New Zealand  Philippines  Singapore  Thailand  Vietnam A Free Trade Agreement (FTA) scheme of the 10 ASEAN Member States and its FTA Partners (Australia, China, Japan, Korea and New Zealand) to be concluded by the end of 2015
South Asian Association for Regional Cooperation19851,713,870,00021.85%  Afghanistan  Bangladesh  Bhutan  India  Maldives  Nepal  Pakistan  Sri Lanka Membership overlap with Economic Cooperation Organization, Commonwealth of Nations
SAPCZ19861,552,860,93419.79%  Argentina  Angola  Benin  Brazil  Cape Verde  Cameroon  Congo  DR Congo  Equatorial Guinea  Gabon  Gambia  Ghana  Guinea  Guinea-Bissau  Ivory Coast  Liberia  Namibia  Nigeria  São Tomé and Príncipe  Senegal  Sierra Leone  South Africa  Togo  Uruguay
Organization for Security and Co-operation in Europe19751,276,751,49716.27%  Albania  Andorra  Armenia  Austria  Azerbaijan  Belarus  Belgium  Bosnia and Herzegovina  Bulgaria  Canada  Croatia  Cyprus  Czech Republic  Denmark  Estonia  Finland  France  Georgia  Germany  Greece  Hungary  Iceland  Ireland  Italy  Kazakhstan  Kyrgyzstan  Latvia  Liechtenstein  Lithuania  Luxembourg  Malta  Moldova  Monaco  Mongolia  Montenegro  Netherlands  North Macedonia  Norway  Poland  Portugal  Romania  Russia  San Marino  Serbia  Slovakia  Slovenia  Spain  Sweden  Switzerland  Tajikistan  Turkey  Turkmenistan  Ukraine  United Kingdom  United States  Uzbekistan  Vatican City Membership overlap with EU, NATO
African Union20021,275,920,97216.26%  Algeria  Angola  Benin  Botswana  Burkina Faso  Burundi  Cape Verde  Cameroon  Central African Republic  Chad  Comoros  DR Congo  Djibouti  Egypt  Equatorial Guinea  Eritrea  Eswatini  Ethiopia  Gabon  Gambia  Ghana  Guinea  Guinea-Bissau  Ivory Coast  Kenya  Lesotho  Liberia  Libya  Madagascar  Malawi  Mali  Mauritania  Mauritius  Morocco  Mozambique  Namibia  Niger  Nigeria  Congo  Rwanda  Sahrawi Arab Democratic Republic  São Tomé and Príncipe  Senegal  Seychelles  Sierra Leone  Somalia  South Africa  South Sudan  Sudan  Tanzania  Togo  Tunisia  Uganda  Zambia  Zimbabwe
Organization of American States1948980,457,92112.5%  Antigua and Barbuda  Argentina  Bahamas  Barbados  Belize  Bolivia  Brazil  Canada  Chile  Colombia  Costa Rica  Cuba  Dominica  Dominican Republic  Ecuador  El Salvador  Grenada  Guatemala  Guyana  Haiti  Honduras  Jamaica  Mexico  Nicaragua  Panama  Paraguay  Peru  Saint Kitts and Nevis  Saint Lucia  Saint Vincent and the Grenadines  Suriname  Trinidad and Tobago  United States  Uruguay  Venezuela Membership overlap with NATO, North American Free Trade Agreement, Mercosur/Mercosul, Asia-Pacific Economic Cooperation, Union of South American States, CAFTA-DR, Community of Latin American and Caribbean States, RIO Group, Caribbean Community, Association of Caribbean States
NATO1949880,978,79811.23%  Albania  Belgium  Bulgaria  Canada  Croatia  Czech Republic  Denmark  Estonia  France  Germany  Greece  Hungary  Iceland  Italy  Latvia  Lithuania  Luxembourg  Montenegro  Netherlands  North Macedonia  Norway  Poland  Portugal  Romania  Slovakia  Slovenia  Spain  Turkey  United Kingdom  United States Membership overlap with Commonwealth of Nations, European Union, Asia-Pacific Economic Cooperation, North American Free Trade Agreement, Organization of American States)
Council of Europe1949820,000,00010.45%  Albania  Andorra  Armenia  Austria  Azerbaijan  Belgium  Bosnia and Herzegovina  Bulgaria  Croatia  Cyprus  Czech Republic  Denmark  Estonia  Finland  France  Georgia  Germany  Greece  Hungary  Iceland  Ireland  Italy  Latvia  Liechtenstein  Lithuania  Luxembourg  Malta  Moldova  Monaco  Montenegro  Netherlands  North Macedonia  Norway  Poland  Portugal  Romania  Russia  San Marino  Serbia  Slovakia  Slovenia  Spain  Sweden  Switzerland  Turkey  Ukraine  United Kingdom Membership overlap with
Inter-American Treaty of Reciprocal Assistance1948754,901,9429.62%  Argentina  Bahamas  Brazil  Chile  Colombia  Costa Rica  Dominican Republic  El Salvador  Guatemala  Haiti  Honduras  Panama  Paraguay  Peru  Trinidad and Tobago  United States  Venezuela Membership overlap with Organization of American States
Community of Latin American and Caribbean States2010652,012,0018.31%  Antigua and Barbuda  Argentina  Bahamas  Barbados  Belize  Bolivia  Chile  Colombia  Costa Rica  Cuba  Dominica  Dominican Republic  Ecuador  El Salvador  Grenada  Guatemala  Guyana  Haiti  Honduras  Jamaica  Mexico  Nicaragua  Panama  Paraguay  Peru  Saint Kitts and Nevis  Saint Lucia  Saint Vincent and the Grenadines  Suriname  Trinidad and Tobago  Uruguay  Venezuela Membership overlap with Organization of American States
Association of Southeast Asian Nations1967647,016,0008.25%  Brunei  Cambodia  Indonesia  Laos  Malaysia  Myanmar  Philippines  Singapore  Thailand  Vietnam Membership overlap with Asia-Pacific Economic Cooperation, African, Caribbean and Pacific Group of States, Small Islands Developing States
Latin American Integration Association1980515,722,7266.57%  Argentina  Bolivia  Brazil  Chile  Colombia  Cuba  Ecuador  Mexico  Paraguay  Panama  Peru  Uruguay  Venezuela Membership overlap with Organization of American States
European Economic Area1994515,000,0006.56%  Austria  Belgium  Bulgaria  Croatia  Cyprus  Czech Republic  Denmark  EU  Estonia  Finland  France  Germany  Greece  Hungary  Iceland  Ireland  Italy  Latvia  Liechtenstein  Lithuania  Luxembourg  Malta  Netherlands  Norway  Poland  Portugal  Romania  Slovakia  Slovenia  Spain  Sweden  Switzerland Membership overlap with European Union, European Free Trade Association, Commonwealth of Nations and La Francophonie
European Union1957513,481,6916.55%  Austria  Belgium  Bulgaria  Croatia  Cyprus  Czech Republic  Denmark  Estonia  Finland  France  Germany  Greece  Hungary  Ireland  Italy  Latvia  Lithuania  Luxembourg  Malta  Netherlands  Poland  Portugal  Romania  Slovakia  Slovenia  Spain  Sweden Membership overlap with NATO, Commonwealth of Nations, European Economic Area[1]
North American Free Trade Agreement1994490,000,0006.25%  Canada  Mexico  United States Membership overlap with Commonwealth of Nations, NATO, Asia-Pacific Economic Cooperation, CAFTA-DR, Organization of American States
Economic Cooperation Organization1985488,405,9496.23%  Afghanistan  Azerbaijan  Iran  Kazakhstan  Kyrgyzstan  Pakistan  Tajikistan  Turkey  Turkmenistan  Uzbekistan Membership overlap with South Asian Association for Regional Cooperation
Arab League1945423,000,0005.39%  Algeria  Bahrain  Comoros  Djibouti  Egypt  Iraq  Jordan  Kuwait  Lebanon  Libya  Mauritania  Morocco  Oman  Palestine  Qatar  Saudi Arabia  Somalia  Sudan  Syria  Tunisia  United Arab Emirates  Yemen Membership overlap with African Union, La Francophonie
OPEC1960369,814,4724.71%  Algeria  Angola  Congo  Equatorial Guinea  Gabon  Iran  Iraq  Kuwait  Libya  Nigeria  Saudi Arabia  United Arab Emirates  Venezuela Membership overlap with Shanghai Cooperation Organisation, South Asian Association for Regional Cooperation, Organization of American States, African Union, Economic Cooperation Organization, Union of South American Nations, Arab League, Mercosur or Mercosul
Organization of the Black Sea Economic Cooperation1992330,000,000[2]4.21%  Albania  Armenia  Azerbaijan  Bulgaria  Georgia  Greece  Moldova  Romania  Russia  Serbia  Turkey  Ukraine Membership overlap with
Council of the Baltic Sea States1992300,744,7083.83%  Denmark  Estonia  Finland  Germany  Iceland  Latvia  Lithuania  Norway  Poland  Russia  Sweden Membership overlap with EU, CIS, Nordic Council, OBSEC.
Commonwealth of Independent States1991277,983,4903.54%  Azerbaijan  Belarus  Kazakhstan  Kyrgyzstan  Armenia  Moldova  Russia  Tajikistan  Uzbekistan Membership overlap with Asia-Pacific Economic Cooperation
Mercosur/Mercosul1991265,212,4353.38%  Argentina  Brazil  Paraguay  Uruguay Membership overlap with Union of South American Nations, Asia-Pacific Economic Cooperation, Unions of South American Nations, Latin Union, Community of Latin American and Caribbean States, RIO Group, Organization of American States
Association of Caribbean States1994237,000,0003.02%  Antigua and Barbuda  Bahamas  Barbados  Belize  Colombia  Costa Rica  Cuba  Dominica  Dominican Republic  El Salvador  Grenada  Guatemala  Guyana  Haiti  Honduras  Jamaica  Mexico  Nicaragua  Panama  Saint Kitts and Nevis  Saint Lucia  Saint Vincent and the Grenadines  Suriname  Trinidad and Tobago  Venezuela An economic zone of Central American plus Caribbean states along with northern South America. Membership overlap with Latin Union, La Francophonie, Community of Latin American and Caribbean States, Union of South American Nations, Caribbean Community, CARIFORUM, RIO Group, CAFTA-DR, Organization of American States
Pacific Alliance2012218,536,6832.79%  Chile  Colombia  Mexico  Peru Membership overlap with Organization of American States
Collective Security Treaty Organisation1994210,000,0002.68%  Armenia  Belarus  Kazakhstan  Kyrgyzstan  Russia  Tajikistan Membership overlap with Commonwealth of Independent States, Shanghai Cooperation Organisation, Asia-Pacific Economic Cooperation
Eurasian Economic Union2001205,693,6492.62%  Armenia  Belarus  Kazakhstan  Kyrgyzstan  Russia Membership overlap with Commonwealth of Independent States and Shanghai Cooperation Organisation, Asia-Pacific Economic Cooperation
South-East European Cooperation Process1996150,492,4581.92%  Albania  Bosnia and Herzegovina  Bulgaria  Croatia  Greece  Kosovo  Moldova  Montenegro  North Macedonia  Romania  Serbia  Slovenia  Turkey Membership overlap with EU and Council of Europe.
British-Irish Council199973,072,7830.93%  Guernsey  Ireland  Isle of Man  Jersey  United Kingdom Membership overlap with EU. The devolved institutions of Northern Ireland, Scotland and Wales are representated separately.
Visegrád Group199164,320,8330.82%  Czech Republic  Hungary  Poland  Slovakia Membership overlap with EU
GUAM Organization for Democracy and Economic Development199962,140,3270.79%  Azerbaijan  Georgia  Moldova  Ukraine [3] Membership overlap with EU
Central American Integration System199351,152,9360.65%  Belize  Costa Rica  Dominican Republic  El Salvador  Guatemala  Honduras  Nicaragua  Panama An economic and political organization of eight Central American states Membership overlap with Latin Union, Community of Latin American and Caribbean States, Union of South American Nations, Association of Caribbean States, RIO Group, CAFTA-DR, Organization of American States
Union of South American Nations200549,002,0000.62%  Bolivia  Guyana  Suriname  Uruguay  Venezuela Membership overlap with Mercosur/Mercosul, Asia-Pacific Economic Cooperation, Latin Union, Community of Latin American and Caribbean States, RIO Group, Association of Caribbean States
Pacific Islands Forum197140,054,0000.51%  Australia  Cook Islands  Fiji  French Polynesia  Kiribati  Marshall Islands  F.S. Micronesia  Nauru  New Caledonia  New Zealand  Niue  Palau  Papua New Guinea  Samoa  Solomon Islands  Tonga  Tuvalu  Vanuatu Membership overlaps with APEC
Benelux194829,300,0000.37%  Belgium  Luxembourg  Netherlands Membership overlap with EU
Nordic Council195325,880,0000.34%  Denmark  Finland  Iceland  Norway  Sweden Membership overlap with EU
Central European Free Trade Agreement199221,907,3540.28%  Albania  Bosnia and Herzegovina  Kosovo (through UNMIK)  Moldova  Montenegro  North Macedonia  Serbia Membership overlap with
CARICOM197318,095,2010.23%  Antigua and Barbuda  Bahamas  Barbados  Belize  Dominica  Grenada  Guyana  Haiti  Jamaica  Montserrat  Saint Kitts and Nevis  Saint Lucia  Saint Vincent and the Grenadines  Suriname  Trinidad and Tobago An economic organization made up of fifteen full members, (fourteen independent countries + one British overseas territory.) Membership overlap with Commonwealth of Nations, La Francophonie, Small Islands Developing States, CARIFORUM, Community of Latin American and Caribbean States, Union of South American Nations, Association of Caribbean States, Organization of Eastern Caribbean States, RIO Group, Central American Integration System, Organization of American States
European Free Trade Association196014,050,0000.18%  Iceland  Liechtenstein  Norway  Switzerland Membership overlap with EEA.|
Organisation of Eastern Caribbean States1981615,7240.01%  Antigua and Barbuda  Dominica  Grenada  Montserrat  Saint Kitts and Nevis  Saint Lucia  Saint Vincent and the Grenadines Membership overlap with CARICOM.

References
  1. Eurostat data Archived 6 July 2007 at the Wayback Machine Eurostat population demography data as of 1 January 2006, extrapolated to 1 January 2007
  2. Agency, Anadolu (15 December 2016). "Black Sea Economic Cooperation Organization: Turkey's third option". Daily Sabah.
  3. "Brochure". guam-organization.org. Retrieved 11 August 2020.
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