As of June 2016, the World Customs Organization has a total of 180 members. The European Communities (now: European Union) joined "on an interim basis akin to those enjoyed by WCO Members".
The 175 sovereign states, 4 customs territories and one customs union are divided into the following regional groups:
East and Southern Africa
sovereign states
Angola— 1990-09-26
Botswana— 1978-08-25
Burundi— 1964-10-20
Comoros— 1993-07-01
Djibouti—2008-03-19
Eritrea— 1995-08-08
Ethiopia— 1973-08-06
Kenya— 1965-05-24
Lesotho— 1978-08-02
Madagascar— 1964-02-18
Malawi— 1966-06-06
Mauritius— 1973-03-29
Mozambique— 1987-07-01
Namibia— 1992-07-01
Rwanda— 1964-03-03
Seychelles— 2000-07-25
Somalia— 2012-10-04
South Sudan— 2012-07-18
South Africa— 1964-03-24
Swaziland— 1981-05-15
Tanzania— 1964-11-07
Uganda— 1964-11-03
Zambia— 1978-09-27
Zimbabwe— 1981-03-19
Europe
sovereign states (founders in bold)
Albania— 1992-08-31
Andorra— 1998-09-03
Armenia— 1992-06-30
Austria— 1953-01-21
Azerbaijan— 1992-06-17
Belarus— 1993-12-16
Belgium— 1952-12-11
Bosnia and Herzegovina— 2008-07-04
Bulgaria— 1973-08-01
Croatia— 1993-07-01
Cyprus— 1967-08-31
Czech Republic— 1993-01-01
Denmark— 1951-10-19
Estonia— 1992-06-18
Finland— 1961-01-27
France— 1952-10-06
Georgia— 1993-10-26
Germany— 1952-11-04
Greece— 1951-12-10
Hungary— 1968-09-16
Iceland— 1971-02-15
Ireland— 1952-09-23
Israel— 1958-05-23
Italy— 1952-11-20
Kazakhstan— 1992-06-30
Kyrgyzstan— 2000-02-10
Latvia— 1992-06-22
Lithuania— 1992-06-18
Luxembourg— 1953-01-23
Macedonia— 1994-07-01
Malta— 1968-07-06
Moldova— 1994-10-28
Montenegro— 2006-10-24
Netherlands— 1953-01-23
Norway— 1951-08-06
Poland— 1974-07-17
Portugal— 1953-01-26
Romania— 1969-01-15
Russian Federation— 1991-07-08
Serbia— 2001-03-27
Slovakia— 1993-01-01
Slovenia— 1992-09-07
Spain— 1952-07-13
Sweden— 1952-10-17
Switzerland— 1952-12-19
Tajikistan— 1997-07-01
Turkey— 1951-06-06
Turkmenistan— 1993-05-17
Ukraine— 1992-06-26
United Kingdom— 1952-09-12
Uzbekistan— 1992-07-28
partially recognised state
Kosovo— 2017-03-03
customs union
European Union
Far East, South and South East Asia, Australasia and the Pacific Islands
sovereign states
Afghanistan— 2004-08-10
Australia— 1961-01-05
Bangladesh— 1978-07-01
Bhutan— 2002-02-12
Brunei Darussalam— 1996-07-01
Cambodia— 2001-04-03
PR China— 1983-07-18
Fiji— 1997-07-01
India— 1971-02-15
Indonesia— 1957-04-30
Iran— 1959-10-16
Japan— 1964-01-15
Korea (Republic of)— 1968-07-02
Laos— 2007-01-16
Malaysia— 1964-06-30
Maldives— 1995-09-08
Mongolia— 1991-09-17
Myanmar— 1991-03-25
Nepal— 1986-07-22
New Zealand— 1963-05-16
Pakistan— 1955-11-16
Papua New Guinea— 2002-03-18
Philippines— 1980-10-01
Samoa— 2001-10-01
Singapore— 1975-07-09
Sri Lanka— 1967-05-29
Thailand— 1972-02-04
Timor-Leste— 2003-09-19
Tonga— 2005-07-01
Vanuatu— 2009-11-17
Vietnam— 1993-07-01
customs territories
Hong Kong— 1987-07-01
Macau— 1993-07-07
North of Africa, Near and Middle East
sovereign states
Algeria— 1966-12-19
Bahrain— 2001-04-18
Egypt— 1956-10-26
Iraq— 1990-06-06
Jordan— 1964-01-01
Kuwait— 1993-10-04
Lebanon— 1960-05-20
Libya— 1983-01-11
Morocco— 1968-07-01
Oman— 2000-09-11
Qatar— 1992-05-04
Saudi Arabia— 1973-05-08
Sudan— 1960-06-08
Syria— 1959-11-19
Tunisia— 1966-07-20
United Arab Emirates— 1979-02-07
Yemen— 1993-07-01
partially recognised state
Palestine— 2015-03-24
South America, North America, Central America and the Caribbean
sovereign states
Argentina— 1968-07-01
Bahamas— 1974-08-16
Barbados— 1999-01-07
Belize— 2008-04-22
Bolivia— 1997-08-14
Brazil— 1981-01-19
Canada— 1971-10-12
Chile— 1966-07-01
Colombia— 1993-07-11
Costa Rica— 2001-08-29
Cuba— 1988-07-01
Dominican Republic— 2004-07-28
Ecuador— 1997-12-16
El Salvador— 2005-07-07
Guatemala— 1985-02-22
Guyana— 1976-07-29
Haiti— 1958-01-31
Honduras— 2005-12-08
Jamaica— 1963-03-29
Mexico— 1988-02-08
Nicaragua— 1998-09-24
Panama— 1996-03-08
Paraguay— 1969-10-03
Peru— 1970-01-27
Saint Lucia— 2005-05-12
Trinidad and Tobago— 1973-10-15
United States— 1970-11-05
Uruguay— 1977-09-16
Venezuela— 1996-07-01
customs territories
Netherlands Antilles— 1988-07-11
Bermuda— 1990-07-01
West and Central Africa
sovereign states
Benin— 1998-11-09
Burkina Faso— 1966-09-16
Cameroon— 1965-04-09
Cape Verde— 1992-07-01
Central African Republic— 1986-07-28
Chad— 2005-02-16
Congo, Republic of the— 1975-09-02
Côte d'Ivoire— 1963-09-02
Democratic Republic of the Congo— 1972-07-26
Gabon— 1965-02-18
Gambia— 1987-10-14
Ghana— 1968-08-01
Guinea— 1991-10-30
Guinea-Bissau— 2010-08-19
Liberia— 1975-01-07
Mali— 1987-08-07
Mauritania— 1979-10-02
Niger— 1981-07-01
Nigeria— 1963-08-21
São Tomé and Príncipe— 2009-09-23
Senegal— 1976-03-10
Sierra Leone— 1975-11-06
Togo— 1990-02-12
The following United Nations member states are not members of the WCO: Antigua and Barbuda, Saint Kitts and Nevis, Saint Vincent and the Grenadines, Grenada, Dominica, Suriname, Equatorial Guinea, Liechtenstein, Monaco, San Marino, North Korea, Palau, Solomon Islands, Micronesia, Kiribati, Marshall Islands, Tuvalu, and Nauru. Non-member states also include Vatican City, Cook Islands, Niue, Taiwan, and the other states with limited recognition.
