Total babies named Irby (all years): 1,130
| Year | Boys (count / rank / %) |
|---|---|
| 1991 | 5 / #8720 / 0.000% |
| 1983 | 5 / #6673 / 0.000% |
| 1977 | 9 / #3967 / 0.001% |
| 1975 | 5 / #5822 / 0.000% |
| 1974 | 6 / #4875 / 0.000% |
| 1973 | 6 / #4745 / 0.000% |
| 1972 | 7 / #4161 / 0.000% |
| 1970 | 5 / #5032 / 0.000% |
| 1969 | 8 / #3424 / 0.000% |
| 1968 | 7 / #3495 / 0.000% |
| Year | Boys (count / rank / %) |
|---|---|
| 1967 | 6 / #3727 / 0.000% |
| 1966 | 5 / #4198 / 0.000% |
| 1965 | 5 / #4156 / 0.000% |
| 1964 | 8 / #3139 / 0.000% |
| 1963 | 5 / #4303 / 0.000% |
| 1962 | 8 / #3157 / 0.000% |
| 1961 | 6 / #3812 / 0.000% |
| 1960 | 15 / #2165 / 0.001% |
| 1959 | 8 / #3138 / 0.000% |
| 1958 | 12 / #2428 / 0.001% |
| Year | Boys (count / rank / %) |
|---|---|
| 1957 | 11 / #2550 / 0.001% |
| 1956 | 16 / #2045 / 0.001% |
| 1955 | 18 / #1873 / 0.001% |
| 1954 | 14 / #2156 / 0.001% |
| 1953 | 15 / #2071 / 0.001% |
| 1952 | 16 / #1970 / 0.001% |
| 1951 | 17 / #1871 / 0.001% |
| 1950 | 13 / #2148 / 0.001% |
| 1949 | 16 / #1904 / 0.001% |
| 1948 | 23 / #1536 / 0.001% |
| Year | Boys (count / rank / %) |
|---|---|
| 1947 | 12 / #2303 / 0.001% |
| 1946 | 9 / #2611 / 0.001% |
| 1945 | 15 / #1817 / 0.001% |
| 1944 | 14 / #1924 / 0.001% |
| 1943 | 11 / #2334 / 0.001% |
| 1942 | 20 / #1604 / 0.001% |
| 1941 | 12 / #2132 / 0.001% |
| 1940 | 20 / #1541 / 0.002% |
| 1939 | 27 / #1286 / 0.002% |
| 1938 | 16 / #1778 / 0.001% |
| Year | Boys (count / rank / %) |
|---|---|
| 1937 | 25 / #1357 / 0.002% |
| 1936 | 15 / #1841 / 0.001% |
| 1935 | 22 / #1468 / 0.002% |
| 1934 | 14 / #1972 / 0.001% |
| 1933 | 21 / #1519 / 0.002% |
| 1932 | 23 / #1490 / 0.002% |
| 1931 | 27 / #1347 / 0.003% |
| 1930 | 26 / #1442 / 0.002% |
| 1929 | 21 / #1640 / 0.002% |
| 1928 | 30 / #1340 / 0.003% |
| Year | Boys (count / rank / %) |
|---|---|
| 1927 | 18 / #1913 / 0.002% |
| 1926 | 37 / #1183 / 0.003% |
| 1925 | 24 / #1554 / 0.002% |
| 1924 | 29 / #1394 / 0.003% |
| 1923 | 17 / #1980 / 0.002% |
| 1922 | 30 / #1355 / 0.003% |
| 1921 | 24 / #1568 / 0.002% |
| 1920 | 26 / #1477 / 0.002% |
| 1919 | 21 / #1665 / 0.002% |
| 1918 | 37 / #1140 / 0.004% |
| Year | Boys (count / rank / %) |
|---|---|
| 1917 | 26 / #1382 / 0.003% |
| 1916 | 33 / #1145 / 0.004% |
| 1915 | 22 / #1484 / 0.003% |
| 1914 | 17 / #1519 / 0.003% |
| 1913 | 18 / #1227 / 0.004% |
| 1912 | 14 / #1313 / 0.003% |
| 1910 | 5 / #1711 / 0.003% |
| 1909 | 8 / #1119 / 0.005% |
| 1908 | 7 / #1158 / 0.005% |
| 1906 | 5 / #1327 / 0.004% |
| Year | Boys (count / rank / %) |
|---|---|
| 1898 | — |
| 1896 | 6 / #1046 / 0.005% |