Zelphia is a girl name. It last appeared in U.S. Social Security records in 1970. Zelphia first appears in the data in 1886 and reached its peak in 1921 (19 births). The chart below shows how the name has risen and fallen over time.
| Year | U.S. births | Rank |
|---|---|---|
| 1970 | 11 | #7,137 |
| 1965 | 8 | #7,233 |
| 1964 | 5 | #9,871 |
| 1960 | 5 | #9,501 |
| 1958 | 6 | #8,205 |
| 1955 | 9 | #6,306 |
| 1951 | 11 | #5,273 |
| 1950 | 7 | #6,727 |
| 1948 | 6 | #7,280 |
| 1945 | 5 | #7,185 |
| 1944 | 6 | #6,487 |
| 1942 | 6 | #6,631 |
| 1940 | 5 | #7,072 |
| 1939 | 9 | #4,931 |
| 1938 | 7 | #5,761 |
| 1936 | 6 | #6,193 |
| 1935 | 10 | #4,745 |
| 1934 | 7 | #5,832 |
| 1933 | 5 | #7,083 |
| 1932 | 7 | #6,037 |
| 1931 | 6 | #6,541 |
| 1930 | 8 | #5,789 |
| 1929 | 7 | #6,276 |
| 1928 | 11 | #4,867 |
| 1927 | 15 | #4,158 |
| 1926 | 10 | #5,313 |
| 1925 | 12 | #4,840 |
| 1924 | 15 | #4,276 |
| 1923 | 14 | #4,413 |
| 1922 | 12 | #4,922 |
| 1921 | 19 | #3,707 |
| 1920 | 11 | #5,125 |
| 1919 | 10 | #5,276 |
| 1918 | 8 | #6,079 |
| 1917 | 18 | #3,524 |
| 1916 | 12 | #4,480 |
| 1915 | 9 | #5,127 |
| 1914 | 9 | #4,417 |
| 1913 | 6 | #4,906 |
| 1910 | 9 | #2,639 |
| 1909 | 9 | #2,426 |
| 1908 | 6 | #2,956 |
| 1906 | 7 | #2,513 |
| 1905 | 6 | #2,708 |
| 1904 | 6 | #2,646 |
| 1900 | 7 | #2,534 |
| 1896 | 6 | #2,378 |
| 1886 | 5 | #2,187 |