Masao: Statistics About The Baby Name Masao
| Year | Boy Rank | # Boys | % Boys | Girl Rank | # Girls | % Girls |
| 1924 | 913 | 59 | 0.0050% | - | - | - |
| 1923 | 918 | 56 | 0.0049% | - | - | - |
| 1922 | 828 | 68 | 0.0060% | - | - | - |
| 1921 | 906 | 60 | 0.0053% | - | - | - |
| 1920 | 969 | 51 | 0.0046% | - | - | - |
| 1919 | 834 | 62 | 0.0061% | - | - | - |
| 1918 | 703 | 81 | 0.0077% | - | - | - |
| 1917 | 818 | 61 | 0.0064% | - | - | - |
| 1916 | 830 | 57 | 0.0062% | - | - | - |
| 1915 | 976 | 42 | 0.0048% | - | - | - |
| 1914 | 862 | 40 | 0.0059% | - | - | - |
| 1913 | 944 | 28 | 0.0052% | - | - | - |
| 1912 | 958 | 23 | 0.0051% | - | - | - |