Merwin is a rare boys' name that was most common in the 1920s and has all but disappeared.
Merwin is predominantly a boy name. It last appears in U.S. records in 2008. Merwin was first reported in SSA data in 1892 and peaked in 1928 (64 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2008 | 5 | 5 | — | #13,914 |
| 1987 | 5 | — | — | #7,739 |
| 1981 | 5 | — | — | #6,928 |
| 1980 | 5 | — | — | #6,917 |
| 1977 | 5 | — | — | #6,503 |
| 1975 | 5 | — | — | #6,009 |
| 1974 | 7 | — | — | #4,465 |
| 1970 | 5 | — | — | #5,201 |
| 1969 | 7 | — | — | #3,816 |
| 1968 | 6 | — | — | #3,986 |
| 1967 | 9 | — | — | #2,911 |
| 1966 | 8 | — | — | #3,158 |
| 1964 | 8 | — | — | #3,203 |
| 1963 | 7 | — | — | #3,547 |
| 1962 | 11 | — | — | #2,620 |
| 1961 | 5 | — | — | #4,455 |
| 1960 | 6 | — | — | #3,923 |
| 1959 | 19 | — | — | #1,901 |
| 1958 | 6 | — | — | #3,796 |
| 1957 | 17 | — | — | #1,998 |
| 1956 | 12 | — | — | #2,451 |
| 1955 | 10 | — | — | #2,702 |
| 1954 | 14 | — | — | #2,180 |
| 1953 | 13 | — | — | #2,254 |
| 1952 | 9 | — | — | #2,814 |
| 1951 | 16 | — | — | #1,951 |
| 1950 | 16 | — | — | #1,928 |
| 1949 | 14 | — | — | #2,085 |
| 1948 | 13 | — | — | #2,187 |
| 1947 | 22 | — | — | #1,633 |
| 1946 | 16 | — | — | #1,865 |
| 1945 | 16 | — | — | #1,741 |
| 1944 | 22 | — | — | #1,467 |
| 1943 | 26 | — | — | #1,391 |
| 1942 | 19 | — | — | #1,663 |
| 1941 | 19 | — | — | #1,624 |
| 1940 | 20 | — | — | #1,554 |
| 1939 | 19 | — | — | #1,565 |
| 1938 | 24 | — | — | #1,391 |
| 1937 | 27 | — | — | #1,303 |
| 1936 | 28 | — | — | #1,262 |
| 1935 | 34 | — | — | #1,140 |
| 1934 | 34 | — | — | #1,143 |
| 1933 | 35 | — | — | #1,119 |
| 1932 | 40 | — | — | #1,072 |
| 1931 | 50 | — | — | #918 |
| 1930 | 46 | — | — | #1,017 |
| 1929 | 44 | — | — | #1,039 |
| 1928 | 69 | — | #5,203 | #823 |
| 1927 | 50 | — | — | #997 |
| 1926 | 58 | — | — | #886 |
| 1925 | 50 | — | — | #969 |
| 1924 | 52 | — | — | #983 |
| 1923 | 57 | — | — | #911 |
| 1922 | 53 | — | — | #968 |
| 1921 | 59 | — | — | #917 |
| 1920 | 45 | — | — | #1,044 |
| 1919 | 49 | — | — | #967 |
| 1918 | 34 | — | — | #1,208 |
| 1917 | 44 | — | — | #993 |
| 1916 | 51 | — | — | #885 |
| 1915 | 47 | — | — | #912 |
| 1914 | 34 | — | — | #960 |
| 1913 | 26 | — | — | #985 |
| 1912 | 10 | — | — | #1,697 |
| 1911 | 8 | — | — | #1,348 |
| 1910 | 5 | — | — | #1,766 |
| 1908 | 8 | — | — | #1,089 |
| 1906 | 7 | — | — | #1,078 |
| 1892 | 5 | — | — | #1,196 |