Deloy is a rare variant of Della that was most common in the 1930s and has all but disappeared.
Deloy is a boy name. It last appears in U.S. records in 1975. Deloy was first reported in SSA data in 1916 and peaked in 1930 (21 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1975 | 6 | — | #4,947 |
| 1965 | 7 | — | #3,316 |
| 1964 | 6 | — | #3,706 |
| 1963 | 7 | — | #3,391 |
| 1962 | 5 | — | #4,195 |
| 1958 | 6 | — | #3,630 |
| 1954 | 7 | — | #3,228 |
| 1953 | 7 | — | #3,203 |
| 1952 | 5 | — | #3,858 |
| 1949 | 6 | — | #3,398 |
| 1947 | 7 | — | #3,151 |
| 1946 | 16 | — | #1,836 |
| 1945 | 5 | — | #3,427 |
| 1944 | 10 | — | #2,344 |
| 1943 | 6 | — | #3,302 |
| 1942 | 6 | — | #3,295 |
| 1941 | 16 | — | #1,777 |
| 1940 | 21 | — | #1,484 |
| 1939 | 15 | — | #1,814 |
| 1938 | 13 | — | #2,006 |
| 1937 | 8 | — | #2,728 |
| 1936 | 14 | — | #1,896 |
| 1935 | 10 | — | #2,423 |
| 1934 | 18 | — | #1,674 |
| 1933 | 11 | — | #2,253 |
| 1932 | 19 | — | #1,662 |
| 1931 | 17 | — | #1,785 |
| 1930 | 21 | — | #1,612 |
| 1929 | 16 | — | #1,947 |
| 1928 | 15 | — | #2,070 |
| 1927 | 7 | — | #3,537 |
| 1926 | 9 | — | #2,964 |
| 1925 | 7 | — | #3,487 |
| 1924 | 8 | — | #3,322 |
| 1923 | 9 | — | #2,996 |
| 1921 | 10 | — | #2,847 |
| 1920 | 6 | — | #3,931 |
| 1918 | 9 | — | #2,929 |
| 1916 | 7 | — | #3,251 |