The baby name Irwin appears in baby name data for the United States from 1910 to 2019. It was most popular in 1925 with 536 babies given the name.
In the later years of this period, Irwin has become less common than it once was.
| Year | Count |
|---|---|
| 1910 | 40 |
| 1911 | 26 |
| 1912 | 95 |
| 1913 | 102 |
| 1914 | 195 |
| 1915 | 262 |
| 1916 | 246 |
| 1917 | 230 |
| 1918 | 275 |
| 1919 | 293 |
| 1920 | 340 |
| 1921 | 329 |
| 1922 | 347 |
| 1923 | 381 |
| 1924 | 496 |
| 1925 | 536 |
| 1926 | 478 |
| 1927 | 517 |
| 1928 | 497 |
| 1929 | 489 |
| 1930 | 435 |
| 1931 | 493 |
| 1932 | 394 |
| 1933 | 364 |
| 1934 | 349 |
| 1935 | 391 |
| 1936 | 361 |
| 1937 | 285 |
| 1938 | 218 |
| 1939 | 211 |
| 1940 | 207 |
| 1941 | 185 |
| 1942 | 224 |
| 1943 | 177 |
| 1944 | 139 |
| 1945 | 141 |
| 1946 | 124 |
| 1947 | 161 |
| 1948 | 127 |
| 1949 | 122 |
| 1950 | 128 |
| 1951 | 113 |
| 1952 | 91 |
| 1953 | 100 |
| 1954 | 83 |
| 1955 | 74 |
| 1956 | 73 |
| 1957 | 65 |
| 1958 | 41 |
| 1959 | 71 |
| 1960 | 35 |
| 1961 | 45 |
| 1962 | 13 |
| 1963 | 20 |
| 1964 | 24 |
| 1965 | 13 |
| 1966 | 24 |
| 1967 | 11 |
| 1968 | 10 |
| 1969 | 10 |
| 1970 | 9 |
| 1971 | 6 |
| 1972 | 6 |
| 1973 | 5 |
| 1975 | 5 |
| 1976 | 6 |
| 1977 | 5 |
| 1981 | 6 |
| 1984 | 7 |
| 1985 | 6 |
| 1988 | 6 |
| 1989 | 13 |
| 1991 | 12 |
| 1992 | 12 |
| 1994 | 11 |
| 1995 | 10 |
| 1996 | 6 |
| 1997 | 6 |
| 1998 | 7 |
| 1999 | 18 |
| 2000 | 10 |
| 2006 | 14 |
| 2007 | 6 |
| 2008 | 5 |
| 2019 | 6 |