International organisation

Organisation for Economic Co-operation and Development

The industrialised economies' policy club, whose 38 members are the closest thing 'developed country' has to a definition with a list.

Abbreviation
OECD
Founded
1948-04-16
Headquarters
Paris
Member states
38 resolved, 38 published by the organisation
Official site
https://www.oecd.org/

Member states

Ordered by accession. A state with no recorded date is listed last rather than given one.

A joining date is the one the source records, which may be the day a treaty was signed or the day it took effect. States that joined together can therefore differ by months here.

StateJoinedListed by the source as
United Kingdom 1961-05-02
Portugal 1961-08-04
France 1961-08-07
Germany 1961-09-27
Greece 1961-09-30
Italy 1962-03-29
Finland 1969
Hungary 1996-05-07
Poland 1996-11-22
South Korea 1996-12-12
Israel 2010-09-07
Latvia 2016-06-16
Lithuania 2018-07-05
Colombia 2020
Costa Rica 2021-05
Australia not recorded
Austria not recorded
Belgium not recorded
Canada not recorded
Chile not recorded
Czech Republic not recorded
Estonia not recorded
Iceland not recorded
Ireland not recorded
Japan not recorded
Kingdom of Denmark not recorded
Kingdom of the Netherlands not recorded Netherlands
Luxembourg not recorded
Mexico not recorded
New Zealand not recorded
Norway not recorded
Slovakia not recorded
Slovenia not recorded
Spain not recorded
Sweden not recorded
Switzerland not recorded
Turkey not recorded
United States not recorded

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