The baby name Masaichi appears in baby name data for the United States from 1914 to 1933. It was most popular in 1918 with 38 babies given the name.
Over the period shown, Masaichi has stayed at a similar level of popularity.
| Year | Count |
|---|---|
| 1914 | 14 |
| 1916 | 14 |
| 1917 | 14 |
| 1918 | 38 |
| 1919 | 24 |
| 1920 | 14 |
| 1921 | 12 |
| 1922 | 14 |
| 1923 | 20 |
| 1924 | 26 |
| 1925 | 10 |
| 1926 | 22 |
| 1927 | 16 |
| 1929 | 12 |
| 1930 | 10 |
| 1933 | 12 |