The baby name Tadao appears in baby name data for the United States from 1914 to 1931. It was most popular in 1920 with 32 babies given the name.
Over the period shown, Tadao has stayed at a similar level of popularity.
| Year | Count |
|---|---|
| 1914 | 10 |
| 1915 | 26 |
| 1916 | 12 |
| 1918 | 24 |
| 1919 | 14 |
| 1920 | 32 |
| 1921 | 16 |
| 1922 | 24 |
| 1923 | 20 |
| 1924 | 20 |
| 1925 | 22 |
| 1926 | 22 |
| 1927 | 22 |
| 1928 | 10 |
| 1929 | 14 |
| 1930 | 12 |
| 1931 | 12 |