Dorthea is an uncommon variant of Dorothea that peaked in 1921 and has since faded.
Dorthea is a girl name. In 2025 it ranked #12,247 for girl births in the United States (and #20,546 across all names), given to 7 babies. Dorthea first appears in 1882 and peaked in 1921 (69 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 7 | 7 | #12,247 |
| 2024 | 5 | 5 | #15,923 |
| 2020 | 5 | 5 | #15,758 |
| 2016 | 5 | 5 | #16,957 |
| 2009 | 5 | 5 | #18,073 |
| 2008 | 7 | 7 | #14,263 |
| 2005 | 6 | 6 | #15,021 |
| 2003 | 5 | 5 | #16,481 |
| 2002 | 7 | 7 | #12,581 |
| 1997 | 7 | — | #11,178 |
| 1996 | 10 | — | #8,337 |
| 1995 | 6 | — | #12,202 |
| 1994 | 7 | — | #10,895 |
| 1993 | 10 | — | #8,238 |
| 1992 | 16 | — | #5,797 |
| 1991 | 20 | — | #4,852 |
| 1990 | 14 | — | #6,226 |
| 1989 | 12 | — | #6,656 |
| 1988 | 12 | — | #6,381 |
| 1987 | 10 | — | #6,937 |
| 1986 | 12 | — | #5,867 |
| 1985 | 12 | — | #5,763 |
| 1984 | 18 | — | #4,206 |
| 1983 | 16 | — | #4,527 |
| 1982 | 23 | — | #3,554 |
| 1981 | 13 | — | #5,342 |
| 1980 | 12 | — | #5,621 |
| 1979 | 12 | — | #5,508 |
| 1978 | 11 | — | #5,655 |
| 1977 | 24 | — | #3,201 |
| 1976 | 14 | — | #4,416 |
| 1975 | 12 | — | #4,934 |
| 1974 | 17 | — | #3,741 |
| 1973 | 20 | — | #3,263 |
| 1972 | 20 | — | #3,204 |
| 1971 | 18 | — | #3,549 |
| 1970 | 31 | — | #2,411 |
| 1969 | 23 | — | #2,785 |
| 1968 | 34 | — | #2,065 |
| 1967 | 28 | — | #2,289 |
| 1966 | 49 | — | #1,606 |
| 1965 | 29 | — | #2,217 |
| 1964 | 32 | — | #2,117 |
| 1963 | 33 | — | #2,072 |
| 1962 | 41 | — | #1,792 |
| 1961 | 22 | — | #2,628 |
| 1960 | 38 | — | #1,839 |
| 1959 | 42 | — | #1,702 |
| 1958 | 37 | — | #1,795 |
| 1957 | 34 | — | #1,879 |
| 1956 | 41 | — | #1,664 |
| 1955 | 33 | — | #1,853 |
| 1954 | 43 | — | #1,544 |
| 1953 | 24 | — | #2,140 |
| 1952 | 26 | — | #1,989 |
| 1951 | 30 | — | #1,780 |
| 1950 | 40 | — | #1,458 |
| 1949 | 17 | — | #2,437 |
| 1948 | 20 | — | #2,203 |
| 1947 | 11 | — | #3,306 |
| 1946 | 23 | — | #1,927 |
| 1945 | 20 | — | #1,892 |
| 1944 | 19 | — | #1,982 |
| 1943 | 17 | — | #2,174 |
| 1942 | 23 | — | #1,770 |
| 1941 | 23 | — | #1,659 |
| 1940 | 11 | — | #2,609 |
| 1939 | 23 | — | #1,604 |
| 1938 | 18 | — | #1,890 |
| 1937 | 34 | — | #1,240 |
| 1936 | 19 | — | #1,755 |
| 1935 | 25 | — | #1,489 |
| 1934 | 28 | — | #1,379 |
| 1933 | 21 | — | #1,668 |
| 1932 | 36 | — | #1,196 |
| 1931 | 22 | — | #1,645 |
| 1930 | 36 | — | #1,256 |
| 1929 | 32 | — | #1,347 |
| 1928 | 37 | — | #1,258 |
| 1927 | 49 | — | #1,090 |
| 1926 | 47 | — | #1,100 |
| 1925 | 39 | — | #1,255 |
| 1924 | 64 | — | #951 |
| 1923 | 49 | — | #1,091 |
| 1922 | 49 | — | #1,093 |
| 1921 | 69 | — | #890 |
| 1920 | 50 | — | #1,053 |
| 1919 | 44 | — | #1,109 |
| 1918 | 48 | — | #1,046 |
| 1917 | 38 | — | #1,164 |
| 1916 | 33 | — | #1,253 |
| 1915 | 36 | — | #1,143 |
| 1914 | 29 | — | #1,128 |
| 1913 | 23 | — | #1,156 |
| 1912 | 14 | — | #1,492 |
| 1911 | 10 | — | #1,570 |
| 1910 | 11 | — | #1,447 |
| 1909 | 12 | — | #1,237 |
| 1908 | 14 | — | #1,103 |
| 1907 | 10 | — | #1,319 |
| 1906 | 7 | — | #1,598 |
| 1903 | 5 | — | #1,862 |
| 1897 | 7 | — | #1,290 |
| 1895 | 9 | — | #1,145 |
| 1884 | 11 | — | #648 |
| 1882 | 5 | — | #943 |