The baby name Sadao appears in baby name data for the United States from 1916 to 1933. It was most popular in 1926 with 32 babies given the name.
Over the period shown, Sadao has stayed at a similar level of popularity.
| Year | Count |
|---|---|
| 1916 | 22 |
| 1917 | 12 |
| 1918 | 14 |
| 1919 | 16 |
| 1921 | 26 |
| 1922 | 26 |
| 1923 | 20 |
| 1924 | 20 |
| 1925 | 24 |
| 1926 | 32 |
| 1927 | 14 |
| 1928 | 18 |
| 1929 | 24 |
| 1930 | 18 |
| 1931 | 12 |
| 1933 | 14 |