The baby name Dwain appears in baby name data for the United States from 1919 to 1991. It was most popular in 1959 with 255 babies given the name.
In the later years of this period, Dwain has become less common than it once was.
| Year | Count |
|---|---|
| 1919 | 15 |
| 1920 | 31 |
| 1921 | 28 |
| 1922 | 32 |
| 1923 | 40 |
| 1924 | 25 |
| 1925 | 46 |
| 1926 | 37 |
| 1927 | 39 |
| 1928 | 42 |
| 1929 | 49 |
| 1930 | 61 |
| 1931 | 54 |
| 1932 | 38 |
| 1933 | 56 |
| 1934 | 62 |
| 1935 | 50 |
| 1936 | 63 |
| 1937 | 62 |
| 1938 | 84 |
| 1939 | 59 |
| 1940 | 78 |
| 1941 | 43 |
| 1942 | 79 |
| 1943 | 33 |
| 1944 | 34 |
| 1945 | 14 |
| 1946 | 78 |
| 1947 | 116 |
| 1948 | 90 |
| 1949 | 108 |
| 1950 | 67 |
| 1951 | 105 |
| 1952 | 66 |
| 1953 | 143 |
| 1954 | 98 |
| 1955 | 147 |
| 1956 | 203 |
| 1957 | 141 |
| 1958 | 162 |
| 1959 | 255 |
| 1960 | 235 |
| 1961 | 166 |
| 1962 | 109 |
| 1963 | 151 |
| 1964 | 129 |
| 1965 | 80 |
| 1966 | 69 |
| 1967 | 75 |
| 1968 | 76 |
| 1969 | 49 |
| 1970 | 93 |
| 1971 | 40 |
| 1972 | 47 |
| 1973 | 68 |
| 1974 | 24 |
| 1975 | 15 |
| 1976 | 10 |
| 1977 | 18 |
| 1978 | 6 |
| 1980 | 18 |
| 1982 | 10 |
| 1983 | 12 |
| 1984 | 5 |
| 1985 | 5 |
| 1987 | 6 |
| 1990 | 17 |
| 1991 | 10 |