Deaglan is a rare variant of Declan that peaked in 2015 and has since faded.
Deaglan is a boy name. In 2025 it ranked #7,795 for boy births in the United States (and #16,304 across all names), given to 10 babies. Deaglan first appears in 1999 and peaked in 2015 (50 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 10 | 10 | #7,795 |
| 2024 | 7 | 7 | #10,134 |
| 2023 | 19 | 19 | #5,114 |
| 2022 | 18 | 18 | #5,256 |
| 2021 | 9 | 9 | #8,328 |
| 2020 | 19 | 19 | #4,899 |
| 2019 | 25 | 25 | #4,138 |
| 2018 | 31 | 31 | #3,554 |
| 2017 | 34 | 34 | #3,328 |
| 2016 | 34 | 34 | #3,310 |
| 2015 | 50 | 50 | #2,495 |
| 2014 | 38 | 38 | #2,996 |
| 2013 | 49 | 49 | #2,497 |
| 2012 | 43 | 43 | #2,782 |
| 2011 | 22 | 22 | #4,398 |
| 2010 | 29 | 29 | #3,648 |
| 2009 | 9 | 9 | #8,455 |
| 2008 | 17 | 17 | #5,302 |
| 2007 | 16 | 16 | #5,488 |
| 2006 | 12 | 12 | #6,554 |
| 2005 | 10 | 10 | #7,238 |
| 2004 | 13 | 13 | #5,889 |
| 2002 | 7 | 7 | #8,666 |
| 2001 | 8 | 8 | #7,704 |
| 1999 | 5 | 5 | #10,271 |