The baby name Kennith appears in baby name data for the United States from 1918 to 2006. It was most popular in 1956 with 281 babies given the name.
In the later years of this period, Kennith has become less common than it once was.
| Year | Count |
|---|---|
| 1918 | 15 |
| 1920 | 22 |
| 1921 | 13 |
| 1922 | 15 |
| 1923 | 15 |
| 1924 | 41 |
| 1925 | 58 |
| 1926 | 24 |
| 1927 | 38 |
| 1928 | 54 |
| 1929 | 65 |
| 1930 | 49 |
| 1931 | 100 |
| 1932 | 71 |
| 1933 | 85 |
| 1934 | 89 |
| 1935 | 112 |
| 1936 | 102 |
| 1937 | 157 |
| 1938 | 119 |
| 1939 | 156 |
| 1940 | 227 |
| 1941 | 141 |
| 1942 | 164 |
| 1943 | 137 |
| 1944 | 149 |
| 1945 | 164 |
| 1946 | 167 |
| 1947 | 242 |
| 1948 | 221 |
| 1949 | 247 |
| 1950 | 190 |
| 1951 | 237 |
| 1952 | 256 |
| 1953 | 224 |
| 1954 | 187 |
| 1955 | 260 |
| 1956 | 281 |
| 1957 | 227 |
| 1958 | 228 |
| 1959 | 258 |
| 1960 | 220 |
| 1961 | 199 |
| 1962 | 215 |
| 1963 | 182 |
| 1964 | 250 |
| 1965 | 212 |
| 1966 | 111 |
| 1967 | 122 |
| 1968 | 118 |
| 1969 | 112 |
| 1970 | 90 |
| 1971 | 85 |
| 1972 | 51 |
| 1973 | 29 |
| 1974 | 58 |
| 1975 | 42 |
| 1976 | 17 |
| 1977 | 37 |
| 1978 | 20 |
| 1979 | 26 |
| 1980 | 6 |
| 1981 | 12 |
| 1982 | 47 |
| 1983 | 16 |
| 1984 | 23 |
| 1985 | 55 |
| 1986 | 10 |
| 1987 | 10 |
| 1988 | 29 |
| 1989 | 45 |
| 1990 | 6 |
| 1991 | 28 |
| 1992 | 5 |
| 1994 | 11 |
| 1997 | 8 |
| 1999 | 7 |
| 2006 | 10 |