Total babies named Hiroko (all years): 328
| Year | Girls (count / rank / %) |
|---|---|
| 1992 | 5 / #14057 / 0.000% |
| 1989 | 9 / #8282 / 0.000% |
| 1988 | 8 / #8682 / 0.000% |
| 1985 | 5 / #11263 / 0.000% |
| 1984 | 6 / #9535 / 0.000% |
| 1982 | 9 / #7085 / 0.001% |
| 1981 | 8 / #7646 / 0.000% |
| 1980 | 5 / #10949 / 0.000% |
| 1977 | 5 / #10170 / 0.000% |
| 1976 | 5 / #9817 / 0.000% |
| Year | Girls (count / rank / %) |
|---|---|
| 1975 | 5 / #9577 / 0.000% |
| 1971 | 6 / #7719 / 0.000% |
| 1945 | 6 / #4232 / 0.000% |
| 1942 | 5 / #4910 / 0.000% |
| 1940 | 9 / #3065 / 0.001% |
| 1939 | 9 / #3004 / 0.001% |
| 1937 | 5 / #4522 / 0.000% |
| 1936 | 7 / #3519 / 0.001% |
| 1935 | 12 / #2483 / 0.001% |
| 1934 | 11 / #2637 / 0.001% |
| Year | Girls (count / rank / %) |
|---|---|
| 1933 | 10 / #2764 / 0.001% |
| 1932 | 13 / #2417 / 0.001% |
| 1931 | 9 / #3075 / 0.001% |
| 1930 | 9 / #3181 / 0.001% |
| 1929 | 12 / #2643 / 0.001% |
| 1928 | 8 / #3575 / 0.001% |
| 1927 | 11 / #2934 / 0.001% |
| 1926 | 13 / #2624 / 0.001% |
| 1925 | 14 / #2543 / 0.001% |
| 1924 | 9 / #3497 / 0.001% |
| Year | Girls (count / rank / %) |
|---|---|
| 1923 | 13 / #2644 / 0.001% |
| 1922 | 8 / #3810 / 0.001% |
| 1921 | 11 / #3028 / 0.001% |
| 1920 | 10 / #3207 / 0.001% |
| 1919 | 19 / #1948 / 0.002% |
| 1918 | 6 / #4534 / 0.001% |
| 1916 | 8 / #3387 / 0.001% |
| 1914 | 5 / #3873 / 0.001% |