The baby name Dewitt appears in baby name data for the United States from 1910 to 1977. It was most popular in 1921 with 188 babies given the name.
In the later years of this period, Dewitt has become less common than it once was.
| Year | Count |
|---|---|
| 1910 | 37 |
| 1911 | 17 |
| 1912 | 45 |
| 1913 | 44 |
| 1914 | 70 |
| 1915 | 90 |
| 1916 | 134 |
| 1917 | 135 |
| 1918 | 185 |
| 1919 | 154 |
| 1920 | 156 |
| 1921 | 188 |
| 1922 | 174 |
| 1923 | 170 |
| 1924 | 162 |
| 1925 | 132 |
| 1926 | 128 |
| 1927 | 125 |
| 1928 | 126 |
| 1929 | 143 |
| 1930 | 169 |
| 1931 | 97 |
| 1932 | 123 |
| 1933 | 63 |
| 1934 | 62 |
| 1935 | 46 |
| 1936 | 81 |
| 1937 | 91 |
| 1938 | 44 |
| 1939 | 73 |
| 1940 | 55 |
| 1941 | 61 |
| 1942 | 86 |
| 1943 | 73 |
| 1944 | 64 |
| 1945 | 55 |
| 1946 | 71 |
| 1947 | 70 |
| 1948 | 80 |
| 1949 | 81 |
| 1950 | 45 |
| 1951 | 47 |
| 1952 | 34 |
| 1953 | 55 |
| 1954 | 40 |
| 1955 | 39 |
| 1956 | 71 |
| 1957 | 58 |
| 1958 | 37 |
| 1959 | 19 |
| 1960 | 13 |
| 1961 | 5 |
| 1962 | 31 |
| 1963 | 20 |
| 1964 | 15 |
| 1965 | 5 |
| 1969 | 10 |
| 1971 | 8 |
| 1977 | 5 |