Total babies named Kazuo (all years): 757
| Year | Boys (count / rank / %) |
|---|---|
| 2009 | 7 / #10458 / 0.000% |
| 2008 | 7 / #10492 / 0.000% |
| 2007 | 5 / #13425 / 0.000% |
| 2006 | 5 / #13058 / 0.000% |
| 1944 | 5 / #3683 / 0.000% |
| 1943 | 6 / #3394 / 0.000% |
| 1939 | 6 / #3294 / 0.001% |
| 1938 | 7 / #3025 / 0.001% |
| 1937 | 6 / #3340 / 0.001% |
| 1936 | 7 / #3027 / 0.001% |
| Year | Boys (count / rank / %) |
|---|---|
| 1935 | 13 / #2089 / 0.001% |
| 1934 | 6 / #3487 / 0.001% |
| 1932 | 20 / #1621 / 0.002% |
| 1931 | 16 / #1890 / 0.002% |
| 1930 | 25 / #1480 / 0.002% |
| 1929 | 18 / #1832 / 0.002% |
| 1928 | 21 / #1677 / 0.002% |
| 1927 | 32 / #1310 / 0.003% |
| 1926 | 31 / #1313 / 0.003% |
| 1925 | 39 / #1133 / 0.003% |
| Year | Boys (count / rank / %) |
|---|---|
| 1924 | 36 / #1214 / 0.003% |
| 1923 | 44 / #1076 / 0.004% |
| 1922 | 53 / #965 / 0.005% |
| 1921 | 57 / #933 / 0.005% |
| 1920 | 44 / #1059 / 0.004% |
| 1919 | 48 / #978 / 0.005% |
| 1918 | 44 / #1023 / 0.004% |
| 1917 | 34 / #1159 / 0.004% |
| 1916 | 30 / #1227 / 0.003% |
| 1915 | 30 / #1199 / 0.004% |
| Year | Boys (count / rank / %) |
|---|---|
| 1914 | 17 / #1526 / 0.003% |
| 1913 | 20 / #1160 / 0.004% |
| 1912 | 12 / #1482 / 0.003% |
| 1911 | 6 / #1643 / 0.003% |