The baby name Masaru appears in baby name data for the United States from 1912 to 1932. It was most popular in 1924 with 36 babies given the name.
Over the period shown, Masaru has stayed at a similar level of popularity.
| Year | Count |
|---|---|
| 1912 | 14 |
| 1914 | 16 |
| 1915 | 22 |
| 1916 | 16 |
| 1917 | 32 |
| 1918 | 20 |
| 1919 | 20 |
| 1920 | 24 |
| 1921 | 28 |
| 1922 | 24 |
| 1923 | 28 |
| 1924 | 36 |
| 1925 | 34 |
| 1926 | 34 |
| 1927 | 22 |
| 1928 | 26 |
| 1929 | 26 |
| 1930 | 16 |
| 1931 | 12 |
| 1932 | 10 |