Ailen is a rare variant of Aileen that peaked in 2022 and remains in steady use.
Ailen is predominantly a girl name. In 2025 it ranked #2,154 for girl births in the United States (and #3,912 across all names), given to 86 babies. Ailen was first reported in SSA data in 1990 and peaked in 2022 (105 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 86 | 86 | #2,154 | — |
| 2024 | 46 | 46 | #3,395 | — |
| 2023 | 65 | 65 | #2,674 | — |
| 2022 | 105 | 105 | #1,907 | — |
| 2021 | 19 | 19 | #6,184 | — |
| 2020 | 16 | 16 | #6,937 | — |
| 2019 | 26 | 26 | #5,801 | #12,200 |
| 2018 | 27 | 27 | #4,893 | — |
| 2017 | 43 | 43 | #3,554 | — |
| 2016 | 35 | 35 | #4,159 | — |
| 2015 | 15 | 15 | #7,634 | — |
| 2014 | 7 | 7 | #13,133 | — |
| 2013 | 14 | 14 | #8,158 | — |
| 2012 | 13 | 13 | #8,647 | — |
| 2011 | 17 | 17 | #7,129 | — |
| 2010 | 20 | 20 | #6,388 | — |
| 2009 | 14 | 14 | #8,467 | — |
| 2008 | 16 | 16 | #7,747 | — |
| 2007 | 5 | 5 | #17,718 | — |
| 2006 | 14 | 14 | #8,254 | — |
| 2005 | 16 | 16 | #7,150 | — |
| 2004 | 7 | 7 | #12,791 | — |
| 2003 | 11 | 11 | #9,061 | — |
| 2002 | 7 | 7 | #12,216 | — |
| 2001 | 15 | 15 | #6,962 | — |
| 2000 | 10 | 10 | #9,173 | — |
| 1999 | 5 | 5 | #14,449 | — |
| 1998 | 5 | 5 | #14,168 | — |
| 1997 | 7 | — | #10,859 | — |
| 1990 | 5 | — | #12,987 | — |