Deloria is a rare girls' name that was most common in the 1950s and has all but disappeared.
Deloria is a girl name. It last appears in U.S. records in 1985. Deloria was first reported in SSA data in 1921 and peaked in 1951 (18 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1985 | 5 | — | #11,074 |
| 1982 | 5 | — | #10,895 |
| 1979 | 6 | — | #9,270 |
| 1978 | 5 | — | #10,128 |
| 1974 | 6 | — | #7,930 |
| 1971 | 9 | — | #5,640 |
| 1970 | 6 | — | #7,282 |
| 1969 | 8 | — | #5,564 |
| 1967 | 12 | — | #3,893 |
| 1966 | 10 | — | #4,256 |
| 1965 | 10 | — | #4,266 |
| 1963 | 8 | — | #4,984 |
| 1962 | 10 | — | #4,334 |
| 1961 | 5 | — | #6,789 |
| 1960 | 13 | — | #3,542 |
| 1959 | 6 | — | #5,722 |
| 1957 | 10 | — | #3,990 |
| 1956 | 13 | — | #3,379 |
| 1955 | 8 | — | #4,467 |
| 1954 | 5 | — | #5,937 |
| 1953 | 7 | — | #4,685 |
| 1952 | 18 | — | #2,514 |
| 1951 | 18 | — | #2,410 |
| 1950 | 15 | — | #2,691 |
| 1949 | 13 | — | #2,875 |
| 1948 | 15 | — | #2,618 |
| 1947 | 10 | — | #3,509 |
| 1946 | 7 | — | #4,088 |
| 1945 | 10 | — | #2,958 |
| 1944 | 11 | — | #2,806 |
| 1943 | 11 | — | #2,902 |
| 1942 | 10 | — | #3,034 |
| 1941 | 9 | — | #3,069 |
| 1940 | 10 | — | #2,783 |
| 1939 | 6 | — | #3,865 |
| 1938 | 10 | — | #2,773 |
| 1937 | 11 | — | #2,599 |
| 1936 | 11 | — | #2,556 |
| 1935 | 8 | — | #3,221 |
| 1934 | 11 | — | #2,602 |
| 1933 | 7 | — | #3,491 |
| 1932 | 5 | — | #4,561 |
| 1931 | 6 | — | #3,978 |
| 1930 | 7 | — | #3,741 |
| 1929 | 5 | — | #4,731 |
| 1928 | 9 | — | #3,235 |
| 1921 | 5 | — | #5,300 |