Decklyn is a rare variant of Declan that peaked in 2015 and has grown less common since.
Decklyn is predominantly a boy name. In 2025 it ranked #5,666 for boy births in the United States (and #11,952 across all names), given to 16 babies. Decklyn first appears in 2001 and peaked in 2015 (37 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 16 | 16 | — | #5,666 |
| 2024 | 13 | 13 | #15,871 | #9,198 |
| 2023 | 24 | 24 | #13,862 | #5,299 |
| 2022 | 30 | 30 | #11,465 | #4,597 |
| 2021 | 33 | 33 | #10,486 | #4,275 |
| 2020 | 48 | 48 | #6,396 | #3,592 |
| 2019 | 45 | 45 | #6,793 | #3,820 |
| 2018 | 51 | 51 | #5,834 | #3,621 |
| 2017 | 53 | 53 | #6,882 | #3,204 |
| 2016 | 29 | 29 | #9,579 | #5,183 |
| 2015 | 54 | 54 | #7,061 | #3,097 |
| 2014 | 40 | 40 | #7,764 | #4,039 |
| 2013 | 29 | 29 | #15,100 | #4,213 |
| 2012 | 26 | 26 | #11,514 | #5,298 |
| 2011 | 6 | 6 | — | #11,157 |
| 2010 | 8 | 8 | — | #8,987 |
| 2001 | 5 | 5 | — | #10,962 |