Zelphia is a rare girls' name that was most common in the 1920s and has all but disappeared.
Zelphia is a girl name. It last appears in U.S. records in 1970. Zelphia was first reported in SSA data in 1886 and peaked in 1921 (19 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1970 | 11 | — | #5,057 |
| 1965 | 8 | — | #5,287 |
| 1964 | 5 | — | #7,806 |
| 1960 | 5 | — | #7,323 |
| 1958 | 6 | — | #6,101 |
| 1955 | 9 | — | #4,374 |
| 1951 | 11 | — | #3,481 |
| 1950 | 7 | — | #4,735 |
| 1948 | 6 | — | #5,240 |
| 1945 | 5 | — | #5,239 |
| 1944 | 6 | — | #4,572 |
| 1942 | 6 | — | #4,620 |
| 1940 | 5 | — | #5,024 |
| 1939 | 9 | — | #3,143 |
| 1938 | 7 | — | #3,845 |
| 1936 | 6 | — | #4,179 |
| 1935 | 10 | — | #2,925 |
| 1934 | 7 | — | #3,800 |
| 1933 | 5 | — | #4,856 |
| 1932 | 7 | — | #3,899 |
| 1931 | 6 | — | #4,328 |
| 1930 | 8 | — | #3,655 |
| 1929 | 7 | — | #4,049 |
| 1928 | 11 | — | #2,953 |
| 1927 | 15 | — | #2,430 |
| 1926 | 10 | — | #3,267 |
| 1925 | 12 | — | #2,936 |
| 1924 | 15 | — | #2,512 |
| 1923 | 14 | — | #2,586 |
| 1922 | 12 | — | #2,957 |
| 1921 | 19 | — | #2,118 |
| 1920 | 11 | — | #3,092 |
| 1919 | 10 | — | #3,216 |
| 1918 | 8 | — | #3,865 |
| 1917 | 18 | — | #1,994 |
| 1916 | 12 | — | #2,656 |
| 1915 | 9 | — | #3,128 |
| 1914 | 9 | — | #2,637 |
| 1913 | 6 | — | #3,182 |
| 1910 | 9 | — | #1,770 |
| 1909 | 9 | — | #1,606 |
| 1908 | 6 | — | #2,100 |
| 1906 | 7 | — | #1,726 |
| 1905 | 6 | — | #1,928 |
| 1904 | 6 | — | #1,875 |
| 1900 | 7 | — | #1,720 |
| 1896 | 6 | — | #1,577 |
| 1886 | 5 | — | #1,282 |