Total babies named Itsuko (all years): 50
| Year | Girls (count / rank / %) |
|---|---|
| 1932 | 5 / #4701 / 0.000% |
| 1931 | 7 / #3661 / 0.001% |
| 1930 | 7 / #3835 / 0.001% |
| 1928 | 5 / #5036 / 0.000% |
| 1927 | 6 / #4532 / 0.001% |
| 1926 | 8 / #3723 / 0.001% |
| 1925 | 5 / #5346 / 0.000% |
| 1916 | 7 / #3712 / 0.001% |