The baby name Theadore appears in baby name data for the United States from 1915 to 1970. It was most popular in 1927 with 67 babies given the name.
In the later years of this period, Theadore has become less common than it once was.
| Year | Count |
|---|---|
| 1915 | 11 |
| 1916 | 7 |
| 1917 | 6 |
| 1918 | 36 |
| 1919 | 17 |
| 1920 | 37 |
| 1921 | 34 |
| 1922 | 17 |
| 1923 | 22 |
| 1924 | 28 |
| 1925 | 38 |
| 1926 | 31 |
| 1927 | 67 |
| 1928 | 24 |
| 1929 | 34 |
| 1930 | 50 |
| 1931 | 59 |
| 1932 | 13 |
| 1933 | 49 |
| 1934 | 30 |
| 1935 | 10 |
| 1936 | 41 |
| 1937 | 12 |
| 1938 | 36 |
| 1939 | 32 |
| 1940 | 33 |
| 1941 | 13 |
| 1942 | 11 |
| 1943 | 30 |
| 1945 | 7 |
| 1946 | 6 |
| 1947 | 11 |
| 1948 | 5 |
| 1949 | 5 |
| 1950 | 7 |
| 1951 | 12 |
| 1952 | 27 |
| 1953 | 12 |
| 1954 | 15 |
| 1955 | 15 |
| 1956 | 6 |
| 1957 | 22 |
| 1960 | 5 |
| 1961 | 16 |
| 1962 | 10 |
| 1963 | 6 |
| 1970 | 7 |