The baby name Rudolf appears in baby name data for the United States from 1911 to 1971. It was most popular in 1927 with 47 babies given the name.
In the later years of this period, Rudolf has become less common than it once was.
| Year | Count |
|---|---|
| 1911 | 5 |
| 1912 | 7 |
| 1913 | 6 |
| 1914 | 12 |
| 1915 | 40 |
| 1916 | 44 |
| 1917 | 24 |
| 1918 | 8 |
| 1919 | 10 |
| 1920 | 10 |
| 1921 | 24 |
| 1922 | 15 |
| 1923 | 13 |
| 1924 | 16 |
| 1925 | 34 |
| 1926 | 33 |
| 1927 | 47 |
| 1928 | 42 |
| 1929 | 33 |
| 1930 | 22 |
| 1931 | 13 |
| 1932 | 13 |
| 1933 | 9 |
| 1934 | 18 |
| 1935 | 5 |
| 1936 | 12 |
| 1937 | 25 |
| 1938 | 22 |
| 1939 | 10 |
| 1940 | 15 |
| 1941 | 20 |
| 1942 | 34 |
| 1943 | 8 |
| 1944 | 6 |
| 1945 | 11 |
| 1946 | 6 |
| 1947 | 20 |
| 1948 | 13 |
| 1949 | 12 |
| 1950 | 5 |
| 1951 | 7 |
| 1952 | 5 |
| 1953 | 9 |
| 1954 | 7 |
| 1955 | 18 |
| 1956 | 7 |
| 1958 | 10 |
| 1959 | 15 |
| 1961 | 5 |
| 1962 | 7 |
| 1963 | 9 |
| 1964 | 7 |
| 1966 | 7 |
| 1967 | 5 |
| 1970 | 6 |
| 1971 | 7 |