Total babies named Synethia (all years): 123
| Year | Girls (count / rank / %) |
|---|---|
| 1991 | 5 / #15155 / 0.000% |
| 1990 | 6 / #12770 / 0.000% |
| 1988 | 6 / #11615 / 0.000% |
| 1987 | 6 / #11137 / 0.000% |
| 1986 | 8 / #8427 / 0.000% |
| 1984 | 5 / #11959 / 0.000% |
| 1983 | 7 / #8896 / 0.000% |
| 1982 | 10 / #6823 / 0.001% |
| 1981 | 6 / #10243 / 0.000% |
| 1980 | 7 / #8968 / 0.000% |
| Year | Girls (count / rank / %) |
|---|---|
| 1979 | 6 / #10051 / 0.000% |
| 1978 | 6 / #9587 / 0.000% |
| 1977 | 6 / #9495 / 0.000% |
| 1974 | 5 / #10038 / 0.000% |
| 1973 | 5 / #9610 / 0.000% |
| 1971 | 7 / #7276 / 0.000% |
| 1969 | 9 / #5400 / 0.001% |
| 1967 | 6 / #6702 / 0.000% |
| 1966 | 7 / #5734 / 0.000% |