The baby name Sonji appears in baby name data for the United States from 1965 to 1973. It was most popular in 1966 with 274 babies given the name.
Over the period shown, Sonji has stayed at a similar level of popularity.
| Year | Count |
|---|---|
| 1965 | 71 |
| 1966 | 274 |
| 1967 | 100 |
| 1968 | 44 |
| 1969 | 51 |
| 1970 | 20 |
| 1971 | 38 |
| 1972 | 20 |
| 1973 | 12 |