List of regional organizations by population

The following is a list of regional organizations by population in 2018.

ListEdit

Flag/Logo	Entities	Founded	Population	Pct of world pop	Members	Notes
	World		7,741,172,000	100.00%		Population Clock
	Asia Cooperation Dialogue	2002	4,317,290,284	55.77%	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
	Regional Comprehensive Economic Partnership	2015	3,400,000,000	43.92%	Australia Brunei Cambodia China India Indonesia Japan Laos Malaysia Myanmar New Zealand Philippines Singapore Thailand Vietnam South Korea	A Free Trade Agreement (FTA) scheme of the 10 ASEAN Member States and its FTA Partners (Australia, China, India, Japan, Korea and New Zealand) to be concluded by the end of 2015
	Shanghai Cooperation Organisation	2001	3,247,750,955	44.47%		Membership overlap with CIS and Eurasian Economic Community, Asia-Pacific Economic Cooperation, South Asian Association for Regional Cooperation
^[1]	BRICS	2008	3,040,000,000	39.27%	Brazil Russia India China South Africa	An association of five major emerging national economies
	Asia-Pacific Economic Cooperation	1989	2,700,000,000	34.88%		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 Nations	1931	1,921,974,000	24.83%		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
	South Asian Association for Regional Cooperation	1985	1,713,870,000	23.46%		Membership overlap with Economic Cooperation Organization, Commonwealth of Nations
	Organization for Security and Co-operation in Europe	1975	1,200,000,000	15.7%		Membership overlap with EU, NATO
	Organization of American States	1908	910,720,588	11.92%		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
	NATO	1949	880,978,798	11.38%		Membership overlap with Commonwealth of Nations, European Union, Asia-Pacific Economic Cooperation, North American Free Trade Agreement, Organization of American States)
	African Union	2002	850,000,000	10.98%		Membership overlap with Arab League, African, Caribbean and Pacific Group of States, Commonwealth of Nations, La Francophonie, Latin Union
	Council of Europe	1949	820,000,000	10.59%		Membership overlap with
	Inter-American Treaty of Reciprocal Assistance	1948	754,901,942	9.75%		Membership overlap with Organization of American States
	Community of Latin American and Caribbean States	2010	652,012,001	8.42%		Membership overlap with Organization of American States
	ASEAN	1967	558,812,200	7.22%		Membership overlap with Asia-Pacific Economic Cooperation, African, Caribbean and Pacific Group of States, Small Islands Developing States
	Latin American Integration Association	1980	515,722,726	6.66%		Membership overlap with Organization of American States
	European Union	1957	512,596,400	6.47%		Membership overlap with NATO, Commonwealth of Nations, European Economic Area^[2]
	European Economic Area	1994	500,017,119	6.46%		Membership overlap with European Union, European Free Trade Association, Commonwealth of Nations and La Francophonie
	North American Free Trade Agreement	1994	457,284,932	5.91%		Membership overlap with Commonwealth of Nations, NATO, Asia-Pacific Economic Cooperation, CAFTA-DR, Organization of American States
	Economic Cooperation Organization	1985	405,139,000	5.23%		Membership overlap with South Asian Association for Regional Cooperation
	Arab League	1945	404,034,810	5.22%		Membership overlap with African Union, La Francophonie
	Union of South American Nations	2005	379,782,748	4.91%		Membership overlap with Mercosur/Mercosul, Asia-Pacific Economic Cooperation, Latin Union, Community of Latin American and Caribbean States, RIO Group, Association of Caribbean States
	OPEC	1960	369,814,472	4.78%		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 Cooperation	1992	330,000,000^[3]	4.26%		Membership overlap with
	Commonwealth of Independent States	1991	277,983,490	3.59%		Membership overlap with Asia-Pacific Economic Cooperation
	Mercosur/Mercosul	1991	265,212,435	3.43%		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 States	1994	237,000,000	3.06%		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 Alliance	2012	218,536,683	2.82%		Membership overlap with Organization of American States
	Collective Security Treaty Organisation	1994	210,000,000	2.71%		Membership overlap with Commonwealth of Independent States, Shanghai Cooperation Organisation, Asia-Pacific Economic Cooperation
	Eurasian Economic Union	2001	205,693,649	2.66%		Membership overlap with Commonwealth of Independent States and Shanghai Cooperation Organisation, Asia-Pacific Economic Cooperation
	Visegrád Group	1991	64,320,833	0.83%		Membership overlap with EU
	GUAM Organization for Democracy and Economic Development	1999	62,140,327	0.80%		Membership overlap with EU
	Central American Integration System	1993	51,152,936	0.66%		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
	Benelux	1948	29,300,000	0.38%		Membership overlap with EU
	Nordic Council	1953	25,880,000	0.34%		Membership overlap with EU
	Central European Free Trade Agreement	1992	21,907,354	0.28%		Membership overlap with
	CARICOM	1973	18,095,201	0.23%		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