Dailen is a rare variant of Dallin that peaked in 2007 and has grown less common since.
Dailen is predominantly a boy name. In 2025 it ranked #9,091 for boy births in the United States (and #18,810 across all names), given to 8 babies. Dailen was first reported in SSA data in 1994 and peaked in 2007 (25 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 8 | 8 | — | #9,091 |
| 2024 | 13 | 13 | — | #6,535 |
| 2023 | 17 | 17 | — | #5,504 |
| 2022 | 16 | 16 | — | #5,677 |
| 2021 | 16 | 16 | — | #5,602 |
| 2020 | 12 | 12 | — | #6,717 |
| 2019 | 15 | 15 | — | #5,875 |
| 2018 | 19 | 19 | — | #4,965 |
| 2017 | 14 | 14 | — | #6,108 |
| 2016 | 12 | 12 | — | #6,809 |
| 2015 | 12 | 12 | — | #6,756 |
| 2014 | 22 | 22 | — | #4,423 |
| 2013 | 17 | 17 | — | #5,215 |
| 2012 | 24 | 24 | — | #4,159 |
| 2011 | 24 | 24 | — | #4,129 |
| 2010 | 23 | 23 | — | #4,263 |
| 2009 | 19 | 19 | — | #4,961 |
| 2008 | 14 | 14 | — | #6,133 |
| 2007 | 25 | 25 | — | #4,031 |
| 2006 | 21 | 21 | — | #4,385 |
| 2005 | 12 | 12 | — | #6,306 |
| 2004 | 14 | 14 | — | #5,553 |
| 2003 | 14 | 14 | — | #5,327 |
| 2002 | 11 | 11 | — | #6,164 |
| 2001 | 16 | 16 | #15,904 | #6,100 |
| 2000 | 16 | 16 | — | #4,625 |
| 1999 | 9 | 9 | — | #6,643 |
| 1998 | 7 | 7 | — | #7,729 |
| 1997 | 6 | — | — | #8,339 |
| 1994 | 5 | — | — | #9,075 |