Total babies named Cosby (all years): 235
| Year | Boys (count / rank / %) |
|---|---|
| 1975 | 6 / #4915 / 0.000% |
| 1968 | 5 / #4240 / 0.000% |
| 1959 | 5 / #4103 / 0.000% |
| 1955 | 7 / #3253 / 0.000% |
| 1954 | 6 / #3520 / 0.000% |
| 1949 | 5 / #3790 / 0.000% |
| 1947 | 6 / #3440 / 0.000% |
| 1942 | 5 / #3661 / 0.000% |
| 1941 | 6 / #3208 / 0.000% |
| 1939 | 7 / #2882 / 0.001% |
| Year | Boys (count / rank / %) |
|---|---|
| 1937 | 7 / #2961 / 0.001% |
| 1936 | 7 / #2927 / 0.001% |
| 1935 | 9 / #2570 / 0.001% |
| 1933 | 10 / #2401 / 0.001% |
| 1932 | 5 / #3882 / 0.000% |
| 1930 | 8 / #3076 / 0.001% |
| 1928 | 12 / #2420 / 0.001% |
| 1927 | 9 / #2953 / 0.001% |
| 1925 | 12 / #2465 / 0.001% |
| 1924 | 9 / #3071 / 0.001% |
| Year | Boys (count / rank / %) |
|---|---|
| 1923 | 9 / #2988 / 0.001% |
| 1921 | 8 / #3270 / 0.001% |
| 1920 | 6 / #3919 / 0.001% |
| 1919 | 10 / #2714 / 0.001% |
| 1918 | 8 / #3161 / 0.001% |
| 1917 | 12 / #2315 / 0.001% |
| 1915 | 6 / #3484 / 0.001% |
| 1914 | 7 / #2710 / 0.001% |
| 1910 | — |
| 1908 | — |