As of January 2023, the World Customs Organization has a total of 186 members.
[1] The European Communities (now: European Union) joined "on an interim basis akin to those enjoyed by WCO Members".
[2] The 185 WCO members include 179 United Nations member states, one United Nations General Assembly non-member observer state (the State of Palestine), as well as Kosovo and 4 customs territories which are dependent territories.
Those 185 members and the European Union are divided into the following regional groups:[3] [4] [5] [15] [17] [18] [19] The following states and territories are not members of the WCO: United Nations member states States not members of the United Nations The following states with limited recognition are not members of the WCO: