Associate Members
| Country | Region | Admission | Previously | |
|---|---|---|---|---|
| 1 | Aruba | Americas | 1987 | |
| 2 | Flanders | Europe | 1997 | |
| 3 | Hong Kong, China | East Asia and the Pacific | 1999 | |
| 4 | Macao, China | East Asia and the Pacific | 1981 | |
| 5 | Madeira, Portugal | Europe | 1995 | |
| 6 | Puerto Rico | Americas | 2002 | 1985 → 1995 |
