The baby name Delois appears in baby name data for the United States from 1917 to 1974. It was most popular in 1951 with 350 babies given the name.
In the later years of this period, Delois has become more popular compared with earlier years.
| Year | Count |
|---|---|
| 1917 | 5 |
| 1918 | 14 |
| 1919 | 15 |
| 1920 | 28 |
| 1921 | 12 |
| 1922 | 28 |
| 1923 | 13 |
| 1924 | 17 |
| 1925 | 58 |
| 1926 | 69 |
| 1927 | 67 |
| 1928 | 104 |
| 1929 | 75 |
| 1930 | 170 |
| 1931 | 121 |
| 1932 | 187 |
| 1933 | 176 |
| 1934 | 241 |
| 1935 | 255 |
| 1936 | 224 |
| 1937 | 287 |
| 1938 | 252 |
| 1939 | 182 |
| 1940 | 249 |
| 1941 | 234 |
| 1942 | 230 |
| 1943 | 317 |
| 1944 | 240 |
| 1945 | 260 |
| 1946 | 313 |
| 1947 | 317 |
| 1948 | 349 |
| 1949 | 320 |
| 1950 | 297 |
| 1951 | 350 |
| 1952 | 296 |
| 1953 | 299 |
| 1954 | 286 |
| 1955 | 269 |
| 1956 | 298 |
| 1957 | 297 |
| 1958 | 178 |
| 1959 | 159 |
| 1960 | 175 |
| 1961 | 145 |
| 1962 | 73 |
| 1963 | 110 |
| 1964 | 71 |
| 1965 | 74 |
| 1966 | 81 |
| 1967 | 37 |
| 1968 | 29 |
| 1969 | 19 |
| 1970 | 23 |
| 1973 | 5 |
| 1974 | 5 |