Tonja is an uncommon girls' name that was most common in the 1960s and has all but disappeared.
Tonja is predominantly a girl name. It last appears in U.S. records in 2005. Tonja first appears in 1940 and peaked in 1967 (512 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2005 | 6 | 6 | #16,307 | — |
| 2002 | 11 | 11 | #9,435 | — |
| 2000 | 10 | 10 | #9,830 | — |
| 1999 | 8 | 8 | #11,320 | — |
| 1998 | 7 | 7 | #12,344 | — |
| 1997 | 7 | — | #12,000 | — |
| 1996 | 6 | — | #13,410 | — |
| 1995 | 9 | — | #9,507 | — |
| 1994 | 14 | — | #6,640 | — |
| 1993 | 10 | — | #8,681 | — |
| 1992 | 24 | — | #4,375 | — |
| 1991 | 15 | — | #6,235 | — |
| 1990 | 24 | — | #4,226 | — |
| 1989 | 24 | — | #4,116 | — |
| 1988 | 28 | — | #3,475 | — |
| 1987 | 36 | — | #2,779 | — |
| 1986 | 22 | — | #3,884 | — |
| 1985 | 38 | — | #2,594 | — |
| 1984 | 39 | — | #2,465 | — |
| 1983 | 41 | — | #2,357 | — |
| 1982 | 65 | — | #1,733 | — |
| 1981 | 68 | — | #1,698 | — |
| 1980 | 74 | — | #1,581 | — |
| 1979 | 101 | — | #1,268 | — |
| 1978 | 95 | — | #1,288 | — |
| 1977 | 122 | — | #1,072 | — |
| 1976 | 144 | — | #915 | — |
| 1975 | 185 | — | #769 | — |
| 1974 | 227 | — | #667 | — |
| 1973 | 317 | — | #530 | — |
| 1972 | 386 | — | #470 | — |
| 1971 | 386 | — | #495 | — |
| 1970 | 451 | — | #464 | — |
| 1969 | 476 | — | #444 | #4,976 |
| 1968 | 455 | — | #448 | — |
| 1967 | 512 | — | #408 | — |
| 1966 | 405 | — | #472 | — |
| 1965 | 358 | — | #502 | — |
| 1964 | 298 | — | #570 | — |
| 1963 | 268 | — | #616 | — |
| 1962 | 248 | — | #643 | — |
| 1961 | 195 | — | #747 | — |
| 1960 | 142 | — | #873 | — |
| 1959 | 122 | — | #958 | — |
| 1958 | 90 | — | #1,119 | — |
| 1957 | 63 | — | #1,342 | — |
| 1956 | 66 | — | #1,286 | — |
| 1955 | 43 | — | #1,573 | — |
| 1954 | 39 | — | #1,646 | — |
| 1953 | 35 | — | #1,701 | — |
| 1952 | 34 | — | #1,708 | — |
| 1951 | 23 | — | #2,107 | — |
| 1950 | 18 | — | #2,428 | — |
| 1949 | 22 | — | #2,129 | — |
| 1948 | 16 | — | #2,584 | — |
| 1947 | 17 | — | #2,526 | — |
| 1946 | 15 | — | #2,589 | — |
| 1945 | 8 | — | #3,659 | — |
| 1944 | 6 | — | #4,533 | — |
| 1943 | 8 | — | #3,784 | — |
| 1942 | 7 | — | #4,092 | — |
| 1940 | 5 | — | #4,974 | — |