Figures for 2017 released by the International Congress and Convention Association (ICCA) indicate that the USA has hosted the most events, and the highest number of delegates, while figures for cities indicate that Barcelona hosted the most meetings, and received the most delegates. Tables for the top ten countries and cities follow.
Countries
| # Participants | # Meetings | Rank by # Meetings | |
| 1 USA | 424,010 | 941 | 1 |
| 2 Spain | 327,996 | 564 | 4 |
| 3 Germany | 246,045 | 682 | 2 |
| 4 France | 211,129 | 506 | 6 |
| 5 UK | 192,544 | 592 | 3 |
| 6 Italy | 172,274 | 515 | 5 |
| 7 Canada | 168, 223 | 360 | 9 |
| 8 Austria | 139,187 | 281 | 12 |
| 9 Netherlands | 134,510 | 307 | 10 |
| 10 Japan | 133,025 | 414 | 7 |
Cities
| # Participants | # Meetings | Rank by # Meetings | |
| 1 Barcelona | 148,624 | 195 | 1 |
| 2 Vienna | 113,891 | 190 | 2 |
| 3 Paris | 111,725 | 190 | 2 |
| 4 Madrid | 110,438 | 153 | 7 |
| 5 Berlin | 97,549 | 185 | 4 |
| 6 Singapore | 83, 762 | 160 | 6 |
| 7 London | 78,811 | 177 | 5 |
| 8 Lisbon | 76,549 | 149 | 9 |
| 9 Amsterdam | 75,578 | 112 | 16 |
| 10 Prague | 66,790 | 151 | 8 |