The number of membership
(As of June 2025, 11)
Individual member
| branch | Hokkaido | Tohoku | Kanto | Chubu | Kansai | Kyusyu | Overseas | Total |
|---|---|---|---|---|---|---|---|---|
| honorary member | 2 | 0 | 34 | 10 | 4 | 2 | 0 | 52 |
| Regular member | 187 | 286 | 15,733 | 20,080 | 5,144 | 618 | 152 | 42,200 |
| Student member | 118 | 118 | 1,346 | 687 | 677 | 178 | 39 | 3,163 |
| Total | 307 | 404 | 17,113 | 20,777 | 5,825 | 798 | 191 | 45,415 |
Corporate member
| Total | 809 |