The baby name Elwin appears in baby name data for the United States from 1912 to 1991. It was most popular in 1921 with 128 babies given the name.
In the later years of this period, Elwin has become less common than it once was.
| Year | Count |
|---|---|
| 1912 | 13 |
| 1913 | 19 |
| 1914 | 75 |
| 1915 | 75 |
| 1916 | 81 |
| 1917 | 73 |
| 1918 | 70 |
| 1919 | 53 |
| 1920 | 106 |
| 1921 | 128 |
| 1922 | 107 |
| 1923 | 116 |
| 1924 | 113 |
| 1925 | 72 |
| 1926 | 96 |
| 1927 | 52 |
| 1928 | 70 |
| 1929 | 75 |
| 1930 | 54 |
| 1931 | 67 |
| 1932 | 78 |
| 1933 | 14 |
| 1934 | 48 |
| 1935 | 36 |
| 1936 | 34 |
| 1937 | 7 |
| 1938 | 19 |
| 1939 | 16 |
| 1940 | 7 |
| 1941 | 15 |
| 1942 | 5 |
| 1943 | 18 |
| 1944 | 10 |
| 1945 | 17 |
| 1946 | 5 |
| 1947 | 6 |
| 1948 | 23 |
| 1949 | 10 |
| 1950 | 22 |
| 1952 | 9 |
| 1953 | 7 |
| 1954 | 20 |
| 1955 | 24 |
| 1956 | 5 |
| 1960 | 7 |
| 1967 | 5 |
| 1987 | 6 |
| 1991 | 5 |