Lillan is a very rare variant of Lillian that was most common in the 1920s and has all but disappeared.
Lillan is a girl name. It last appears in U.S. records in 2015. Lillan was first reported in SSA data in 1913 and peaked in 1922 (9 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2015 | 5 | 5 | #18,034 |
| 2008 | 8 | 8 | #13,297 |
| 2007 | 7 | 7 | #14,817 |
| 2006 | 6 | 6 | #16,290 |
| 1931 | 5 | — | #4,704 |
| 1930 | 6 | — | #4,319 |
| 1928 | 5 | — | #5,110 |
| 1925 | 5 | — | #5,435 |
| 1924 | 5 | — | #5,522 |
| 1922 | 9 | — | #3,535 |
| 1921 | 6 | — | #4,802 |
| 1920 | 5 | — | #5,413 |
| 1918 | 8 | — | #3,691 |
| 1917 | 7 | — | #3,931 |
| 1915 | 6 | — | #4,044 |
| 1914 | 5 | — | #3,941 |
| 1913 | 6 | — | #3,034 |