Jyll is a very rare girls' name that was most common in the 1950s and has all but disappeared.
Jyll is a girl name. It last appears in U.S. records in 1983. Jyll first appears in 1954 and peaked in 1954 (9 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1983 | 5 | — | #11,000 |
| 1980 | 5 | — | #11,089 |
| 1979 | 7 | — | #8,429 |
| 1977 | 5 | — | #10,293 |
| 1973 | 5 | — | #8,972 |
| 1972 | 5 | — | #8,827 |
| 1971 | 7 | — | #6,909 |
| 1970 | 5 | — | #8,575 |
| 1968 | 8 | — | #5,345 |
| 1966 | 6 | — | #6,124 |
| 1961 | 6 | — | #6,169 |
| 1960 | 6 | — | #5,998 |
| 1959 | 7 | — | #5,282 |
| 1956 | 5 | — | #6,391 |
| 1954 | 9 | — | #4,118 |