Sadako is a rare girls' name that was most common in the 1920s and has all but disappeared.
Sadako is a girl name. It last appears in U.S. records in 1940. Sadako first appears in 1913 and peaked in 1924 (25 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1940 | 5 | — | #4,923 |
| 1934 | 5 | — | #4,860 |
| 1933 | 5 | — | #4,765 |
| 1932 | 8 | — | #3,527 |
| 1931 | 8 | — | #3,444 |
| 1930 | 12 | — | #2,666 |
| 1929 | 17 | — | #2,087 |
| 1928 | 18 | — | #2,082 |
| 1927 | 25 | — | #1,718 |
| 1926 | 23 | — | #1,823 |
| 1925 | 23 | — | #1,841 |
| 1924 | 25 | — | #1,758 |
| 1923 | 14 | — | #2,578 |
| 1922 | 14 | — | #2,584 |
| 1921 | 24 | — | #1,815 |
| 1920 | 22 | — | #1,879 |
| 1919 | 24 | — | #1,693 |
| 1918 | 21 | — | #1,872 |
| 1917 | 18 | — | #1,983 |
| 1916 | 12 | — | #2,632 |
| 1915 | 19 | — | #1,783 |
| 1913 | 7 | — | #2,779 |