Deforest is a rare boys' name that was most common in the 1920s and has all but disappeared.
Deforest is a boy name. It last appears in U.S. records in 2001. Deforest was first reported in SSA data in 1881 and peaked in 1920 (26 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2001 | 5 | 5 | #10,963 |
| 1995 | 7 | — | #7,175 |
| 1994 | 8 | — | #6,497 |
| 1993 | 5 | — | #9,052 |
| 1992 | 7 | — | #6,837 |
| 1991 | 7 | — | #6,679 |
| 1979 | 5 | — | #6,271 |
| 1974 | 6 | — | #4,755 |
| 1973 | 5 | — | #5,265 |
| 1972 | 6 | — | #4,560 |
| 1971 | 8 | — | #3,737 |
| 1970 | 7 | — | #3,933 |
| 1967 | 6 | — | #3,644 |
| 1966 | 6 | — | #3,619 |
| 1965 | 9 | — | #2,834 |
| 1962 | 5 | — | #4,188 |
| 1961 | 5 | — | #4,201 |
| 1958 | 5 | — | #4,084 |
| 1956 | 6 | — | #3,622 |
| 1955 | 5 | — | #3,993 |
| 1953 | 8 | — | #2,964 |
| 1952 | 8 | — | #2,926 |
| 1951 | 9 | — | #2,710 |
| 1950 | 7 | — | #3,095 |
| 1949 | 13 | — | #2,146 |
| 1948 | 8 | — | #2,832 |
| 1947 | 15 | — | #2,008 |
| 1945 | 7 | — | #2,807 |
| 1944 | 11 | — | #2,223 |
| 1943 | 8 | — | #2,782 |
| 1942 | 6 | — | #3,291 |
| 1941 | 5 | — | #3,620 |
| 1940 | 6 | — | #3,210 |
| 1939 | 8 | — | #2,653 |
| 1938 | 7 | — | #2,928 |
| 1937 | 6 | — | #3,250 |
| 1935 | 16 | — | #1,779 |
| 1934 | 20 | — | #1,566 |
| 1933 | 9 | — | #2,588 |
| 1932 | 14 | — | #2,020 |
| 1931 | 9 | — | #2,700 |
| 1930 | 5 | — | #4,125 |
| 1929 | 18 | — | #1,808 |
| 1928 | 15 | — | #2,068 |
| 1927 | 18 | — | #1,889 |
| 1926 | 14 | — | #2,217 |
| 1925 | 14 | — | #2,216 |
| 1924 | 15 | — | #2,151 |
| 1923 | 14 | — | #2,253 |
| 1922 | 16 | — | #2,063 |
| 1921 | 24 | — | #1,555 |
| 1920 | 26 | — | #1,467 |
| 1919 | 24 | — | #1,492 |
| 1918 | 15 | — | #2,087 |
| 1917 | 23 | — | #1,490 |
| 1916 | 8 | — | #2,978 |
| 1915 | 18 | — | #1,674 |
| 1914 | 17 | — | #1,506 |
| 1913 | 12 | — | #1,602 |
| 1912 | 5 | — | #2,634 |
| 1911 | 5 | — | #1,800 |
| 1908 | 6 | — | #1,248 |
| 1904 | 6 | — | #1,095 |
| 1894 | 5 | — | #1,123 |
| 1891 | 6 | — | #870 |
| 1890 | 6 | — | #917 |
| 1881 | 9 | — | #610 |