The baby name Delpha appears in baby name data for the United States from 1911 to 1938. It was most popular in 1920 with 56 babies given the name.
In the later years of this period, Delpha has become less common than it once was.
| Year | Count |
|---|---|
| 1911 | 6 |
| 1913 | 21 |
| 1914 | 6 |
| 1915 | 52 |
| 1916 | 51 |
| 1917 | 45 |
| 1918 | 23 |
| 1919 | 23 |
| 1920 | 56 |
| 1921 | 37 |
| 1922 | 41 |
| 1923 | 24 |
| 1924 | 17 |
| 1925 | 14 |
| 1926 | 8 |
| 1927 | 6 |
| 1928 | 16 |
| 1929 | 10 |
| 1930 | 27 |
| 1931 | 18 |
| 1932 | 5 |
| 1933 | 21 |
| 1935 | 5 |
| 1938 | 8 |