Top 12 Countries with Members in RSC Groups
| Country | Number of Members |
| USA | 343 |
| Republic of Ireland | 193 |
| Australia | 93 |
| Germany | 78 |
| Canada | 61 |
| Japan | 54 |
| France | 52 |
| Italy | 51 |
| Switzerland | 51 |
| Spain | 45 |
| The Netherlands | 42 |
| Hong Kong | 37 |
| TOTAL | 1103 |
RSC Groups with c. 100+ members from non-UK countries
| Interest Group | Interest Group Code | Number of Members |
| Biological and medicinal Chemistry Sector Group | IG33 | 174 |
| Management Group | IG37 | 132 |
| Heterocyclic and Synthesis Group | IG41 | 128 |
| Environmental Chemistry Group | IG32 | 126 |
| Bio-Organic Group | IG62 | 118 |
| Process Technology Group | IG39 | 105 |
| Chromatography and Electrophoresis Group | IG04 | 99 |
| Colloid and Interface Science Group | IG21 | 95 |
| Joint Pharmaceutical Analysis Group | IG09 | 88 |
| Organic Reactions Mechanisms Group | IG44 | 86 |
| Formulation Science and Technology Group | IG74 | 82 |
| Food Group | IG34 | 82 |
| TOTAL | 1315 |
