Dorethea is a rare variant of Dorothea that was most common in the 1950s and has all but disappeared.
Dorethea is a girl name. It last appears in U.S. records in 1977. Dorethea first appears in 1912 and peaked in 1956 (32 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1977 | 6 | — | #8,736 |
| 1976 | 5 | — | #9,691 |
| 1975 | 10 | — | #5,645 |
| 1974 | 6 | — | #7,956 |
| 1972 | 12 | — | #4,598 |
| 1971 | 8 | — | #6,162 |
| 1970 | 8 | — | #5,958 |
| 1969 | 10 | — | #4,798 |
| 1968 | 14 | — | #3,658 |
| 1967 | 13 | — | #3,715 |
| 1966 | 8 | — | #4,983 |
| 1965 | 19 | — | #2,862 |
| 1964 | 19 | — | #2,931 |
| 1963 | 25 | — | #2,441 |
| 1962 | 17 | — | #3,067 |
| 1961 | 23 | — | #2,564 |
| 1960 | 19 | — | #2,838 |
| 1959 | 18 | — | #2,786 |
| 1958 | 19 | — | #2,688 |
| 1957 | 29 | — | #2,037 |
| 1956 | 32 | — | #1,905 |
| 1955 | 22 | — | #2,356 |
| 1954 | 18 | — | #2,613 |
| 1953 | 22 | — | #2,252 |
| 1952 | 21 | — | #2,284 |
| 1951 | 22 | — | #2,138 |
| 1950 | 22 | — | #2,069 |
| 1949 | 17 | — | #2,436 |
| 1948 | 18 | — | #2,352 |
| 1947 | 23 | — | #2,055 |
| 1946 | 11 | — | #3,082 |
| 1945 | 11 | — | #2,781 |
| 1944 | 17 | — | #2,119 |
| 1943 | 7 | — | #3,900 |
| 1942 | 14 | — | #2,452 |
| 1941 | 13 | — | #2,434 |
| 1940 | 13 | — | #2,331 |
| 1939 | 15 | — | #2,145 |
| 1938 | 13 | — | #2,367 |
| 1937 | 12 | — | #2,478 |
| 1936 | 19 | — | #1,754 |
| 1935 | 15 | — | #2,125 |
| 1934 | 17 | — | #1,938 |
| 1933 | 19 | — | #1,796 |
| 1932 | 25 | — | #1,532 |
| 1931 | 19 | — | #1,816 |
| 1930 | 22 | — | #1,716 |
| 1929 | 14 | — | #2,343 |
| 1928 | 23 | — | #1,745 |
| 1927 | 20 | — | #1,954 |
| 1926 | 13 | — | #2,605 |
| 1925 | 22 | — | #1,858 |
| 1924 | 17 | — | #2,232 |
| 1923 | 20 | — | #1,960 |
| 1922 | 16 | — | #2,308 |
| 1921 | 11 | — | #2,985 |
| 1920 | 23 | — | #1,767 |
| 1919 | 19 | — | #1,935 |
| 1918 | 14 | — | #2,412 |
| 1917 | 7 | — | #3,811 |
| 1916 | 11 | — | #2,707 |
| 1915 | 10 | — | #2,746 |
| 1914 | 13 | — | #1,929 |
| 1913 | 6 | — | #2,910 |
| 1912 | 9 | — | #2,017 |