When formed on 5 May 1948, there were 21 members of the OAS. The organization's membership expanded as other nations in the
Americas gained full political
independence as
sovereign states.
Former member states Permanent missions accredited to the OAS in Washington, D.C. File:2308 California Street NW.jpg|Permanent Mission of El Salvador to the OAS File:Permanent Mission of Guatemala to the OAS.jpg|Permanent Mission of Guatemala to the OAS File:Permanent Mission of Mexico to the OAS in Washington, D.C.jpg|Permanent Mission of Mexico to the OAS File:EmbassyParaguayWashingtonDC.JPG|Permanent Mission of Paraguay to the OAS == Non-member jurisdictions ==