Delpha is an uncommon girls' name that was most common in the 1920s and has all but disappeared.
Delpha is a girl name. It last appears in U.S. records in 1979. Delpha was first reported in SSA data in 1882 and peaked in 1921 (74 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1979 | 5 | — | #10,588 |
| 1971 | 5 | — | #8,634 |
| 1969 | 6 | — | #6,825 |
| 1966 | 6 | — | #5,961 |
| 1965 | 9 | — | #4,579 |
| 1962 | 10 | — | #4,335 |
| 1961 | 5 | — | #6,790 |
| 1960 | 10 | — | #4,250 |
| 1959 | 8 | — | #4,718 |
| 1958 | 7 | — | #5,012 |
| 1957 | 10 | — | #3,991 |
| 1956 | 11 | — | #3,742 |
| 1955 | 9 | — | #4,142 |
| 1954 | 16 | — | #2,804 |
| 1953 | 12 | — | #3,314 |
| 1952 | 17 | — | #2,601 |
| 1951 | 10 | — | #3,541 |
| 1950 | 16 | — | #2,577 |
| 1949 | 21 | — | #2,155 |
| 1948 | 12 | — | #3,008 |
| 1947 | 14 | — | #2,795 |
| 1946 | 25 | — | #1,820 |
| 1945 | 15 | — | #2,258 |
| 1944 | 20 | — | #1,926 |
| 1943 | 18 | — | #2,093 |
| 1942 | 27 | — | #1,602 |
| 1941 | 20 | — | #1,829 |
| 1940 | 22 | — | #1,702 |
| 1939 | 19 | — | #1,814 |
| 1938 | 37 | — | #1,205 |
| 1937 | 36 | — | #1,205 |
| 1936 | 31 | — | #1,300 |
| 1935 | 29 | — | #1,363 |
| 1934 | 33 | — | #1,240 |
| 1933 | 37 | — | #1,164 |
| 1932 | 39 | — | #1,151 |
| 1931 | 44 | — | #1,061 |
| 1930 | 55 | — | #994 |
| 1929 | 35 | — | #1,261 |
| 1928 | 50 | — | #1,061 |
| 1927 | 54 | — | #1,043 |
| 1926 | 42 | — | #1,186 |
| 1925 | 55 | — | #1,011 |
| 1924 | 53 | — | #1,072 |
| 1923 | 55 | — | #1,018 |
| 1922 | 62 | — | #943 |
| 1921 | 74 | — | #858 |
| 1920 | 68 | — | #881 |
| 1919 | 67 | — | #851 |
| 1918 | 61 | — | #915 |
| 1917 | 54 | — | #947 |
| 1916 | 65 | — | #844 |
| 1915 | 50 | — | #936 |
| 1914 | 35 | — | #1,008 |
| 1913 | 27 | — | #1,047 |
| 1912 | 32 | — | #893 |
| 1911 | 21 | — | #962 |
| 1910 | 12 | — | #1,355 |
| 1909 | 15 | — | #1,064 |
| 1908 | 17 | — | #976 |
| 1907 | 11 | — | #1,227 |
| 1906 | 16 | — | #927 |
| 1905 | 18 | — | #880 |
| 1904 | 16 | — | #913 |
| 1903 | 14 | — | #939 |
| 1902 | 19 | — | #802 |
| 1901 | 13 | — | #928 |
| 1900 | 22 | — | #782 |
| 1899 | 18 | — | #762 |
| 1898 | 13 | — | #972 |
| 1897 | 15 | — | #834 |
| 1896 | 18 | — | #766 |
| 1895 | 11 | — | #1,000 |
| 1894 | 11 | — | #960 |
| 1893 | 11 | — | #913 |
| 1892 | 11 | — | #916 |
| 1891 | 7 | — | #1,121 |
| 1890 | 7 | — | #1,121 |
| 1888 | 6 | — | #1,170 |
| 1886 | 11 | — | #700 |
| 1885 | 6 | — | #947 |
| 1884 | 5 | — | #1,061 |
| 1883 | 9 | — | #658 |
| 1882 | 7 | — | #760 |