Keilen is a very rare variant of Kellen that peaked in 2008 and has since faded.
Keilen is predominantly a boy name. It last appears in U.S. records in 2024. Keilen first appears in 1991 and peaked in 2009 (18 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2024 | 11 | 11 | — | #7,515 |
| 2022 | 8 | 8 | — | #9,441 |
| 2021 | 7 | 7 | — | #10,286 |
| 2020 | 5 | 5 | — | #13,128 |
| 2019 | 15 | 15 | — | #5,970 |
| 2018 | 7 | 7 | — | #10,225 |
| 2017 | 7 | 7 | — | #10,256 |
| 2016 | 5 | 5 | — | #13,260 |
| 2015 | 8 | 8 | — | #9,176 |
| 2014 | 14 | 14 | — | #6,156 |
| 2012 | 19 | 19 | #15,930 | #6,499 |
| 2011 | 12 | 12 | — | #6,817 |
| 2010 | 19 | 19 | #15,993 | #6,552 |
| 2009 | 18 | 18 | — | #5,209 |
| 2008 | 22 | 22 | #13,208 | #6,264 |
| 2007 | 11 | 11 | — | #7,360 |
| 2006 | 18 | 18 | #18,626 | #6,290 |
| 2005 | 10 | 10 | — | #7,413 |
| 2004 | 6 | 6 | #15,113 | — |
| 2003 | 9 | 9 | — | #7,559 |
| 2002 | 9 | 9 | — | #7,356 |
| 2001 | 5 | 5 | — | #11,509 |
| 2000 | 12 | 12 | — | #5,750 |
| 1999 | 8 | 8 | — | #7,526 |
| 1998 | 8 | 8 | — | #7,225 |
| 1997 | 7 | — | — | #7,706 |
| 1991 | 6 | — | — | #7,778 |