The baby name Billi appears in baby name data for the United States from 1966 to 1981. It was most popular in 1971 with 49 babies given the name.
Over the period shown, Billi has stayed at a similar level of popularity.
| Year | Count |
|---|---|
| 1966 | 5 |
| 1969 | 6 |
| 1970 | 5 |
| 1971 | 49 |
| 1972 | 23 |
| 1973 | 24 |
| 1974 | 26 |
| 1975 | 28 |
| 1976 | 35 |
| 1977 | 15 |
| 1978 | 11 |
| 1979 | 15 |
| 1980 | 6 |
| 1981 | 26 |