Sonjia is a rare variant of Sonja that was most common in the 1960s and has all but disappeared.
Sonjia is a girl name. It last appears in U.S. records in 2007. Sonjia first appears in 1938 and peaked in 1967 (55 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2007 | 5 | 5 | #20,170 |
| 1997 | 7 | — | #11,924 |
| 1996 | 6 | — | #13,273 |
| 1995 | 6 | — | #13,177 |
| 1992 | 5 | — | #15,277 |
| 1991 | 6 | — | #12,929 |
| 1990 | 9 | — | #9,151 |
| 1989 | 8 | — | #9,563 |
| 1988 | 11 | — | #7,057 |
| 1987 | 10 | — | #7,282 |
| 1986 | 5 | — | #12,568 |
| 1983 | 7 | — | #8,873 |
| 1982 | 7 | — | #9,080 |
| 1981 | 12 | — | #5,848 |
| 1980 | 10 | — | #6,714 |
| 1979 | 12 | — | #5,716 |
| 1978 | 7 | — | #8,433 |
| 1977 | 10 | — | #6,279 |
| 1976 | 16 | — | #4,131 |
| 1975 | 22 | — | #3,241 |
| 1974 | 23 | — | #3,090 |
| 1973 | 26 | — | #2,739 |
| 1972 | 28 | — | #2,580 |
| 1971 | 22 | — | #3,142 |
| 1970 | 30 | — | #2,514 |
| 1969 | 40 | — | #1,996 |
| 1968 | 35 | — | #2,049 |
| 1967 | 55 | — | #1,522 |
| 1966 | 37 | — | #1,910 |
| 1965 | 30 | — | #2,197 |
| 1964 | 26 | — | #2,464 |
| 1963 | 22 | — | #2,686 |
| 1962 | 29 | — | #2,252 |
| 1961 | 34 | — | #2,031 |
| 1960 | 38 | — | #1,851 |
| 1959 | 23 | — | #2,451 |
| 1958 | 25 | — | #2,311 |
| 1957 | 27 | — | #2,162 |
| 1956 | 21 | — | #2,523 |
| 1955 | 18 | — | #2,712 |
| 1954 | 21 | — | #2,439 |
| 1953 | 22 | — | #2,291 |
| 1952 | 19 | — | #2,495 |
| 1951 | 24 | — | #2,057 |
| 1950 | 20 | — | #2,242 |
| 1949 | 25 | — | #1,960 |
| 1948 | 16 | — | #2,581 |
| 1947 | 26 | — | #1,939 |
| 1946 | 16 | — | #2,475 |
| 1945 | 13 | — | #2,582 |
| 1944 | 20 | — | #1,960 |
| 1943 | 27 | — | #1,656 |
| 1942 | 16 | — | #2,303 |
| 1941 | 20 | — | #1,873 |
| 1940 | 26 | — | #1,546 |
| 1939 | 13 | — | #2,400 |
| 1938 | 19 | — | #1,864 |