Jilleen is a very rare variant of Jillian that was most common in the 1970s and has all but disappeared.
Jilleen is a girl name. It last appears in U.S. records in 1998. Jilleen was first reported in SSA data in 1948 and peaked in 1972 (9 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1998 | 5 | 5 | #15,196 |
| 1992 | 6 | — | #12,424 |
| 1989 | 5 | — | #13,259 |
| 1984 | 7 | — | #8,540 |
| 1983 | 5 | — | #10,957 |
| 1981 | 5 | — | #11,089 |
| 1978 | 5 | — | #10,408 |
| 1977 | 8 | — | #7,156 |
| 1975 | 6 | — | #8,412 |
| 1972 | 9 | — | #5,662 |
| 1971 | 6 | — | #7,764 |
| 1970 | 8 | — | #6,023 |
| 1969 | 8 | — | #5,655 |
| 1967 | 7 | — | #5,692 |
| 1966 | 6 | — | #6,101 |
| 1965 | 6 | — | #6,101 |
| 1964 | 7 | — | #5,702 |
| 1960 | 5 | — | #6,767 |
| 1959 | 7 | — | #5,259 |
| 1956 | 6 | — | #5,573 |
| 1953 | 6 | — | #5,320 |
| 1948 | 5 | — | #5,602 |