Dorthia is a very rare variant of Dorothea that was most common in the 1920s and has all but disappeared.
Dorthia is a girl name. It last appears in U.S. records in 1974. Dorthia first appears in 1914 and peaked in 1923 (10 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1974 | 5 | — | #9,140 |
| 1960 | 6 | — | #5,883 |
| 1949 | 5 | — | #5,450 |
| 1945 | 7 | — | #3,762 |
| 1943 | 5 | — | #4,847 |
| 1942 | 5 | — | #4,807 |
| 1939 | 5 | — | #4,416 |
| 1937 | 7 | — | #3,537 |
| 1935 | 5 | — | #4,384 |
| 1934 | 5 | — | #4,443 |
| 1932 | 7 | — | #3,664 |
| 1931 | 7 | — | #3,577 |
| 1928 | 9 | — | #3,247 |
| 1927 | 8 | — | #3,625 |
| 1926 | 6 | — | #4,446 |
| 1925 | 8 | — | #3,764 |
| 1924 | 10 | — | #3,198 |
| 1923 | 10 | — | #3,185 |
| 1922 | 7 | — | #4,117 |
| 1921 | 7 | — | #4,131 |
| 1920 | 6 | — | #4,528 |
| 1917 | 5 | — | #4,767 |
| 1914 | 7 | — | #2,966 |