Declyn is a boy name. In 2025 it ranked #6700 for boy births in the United States, given to 39 babies. Declyn first appears in the data in 2004 and reached its peak in 2018 (70 births). The chart below shows how the name has risen and fallen over time.
| Year | U.S. births | Rank |
|---|---|---|
| 2025 | 39 | #6,700 |
| 2024 | 39 | #6,782 |
| 2023 | 46 | #6,029 |
| 2022 | 53 | #5,496 |
| 2021 | 64 | #4,770 |
| 2020 | 59 | #4,979 |
| 2019 | 44 | #6,165 |
| 2018 | 70 | #4,467 |
| 2017 | 54 | #5,342 |
| 2016 | 61 | #4,941 |
| 2015 | 54 | #5,379 |
| 2014 | 51 | #5,584 |
| 2013 | 36 | #7,069 |
| 2012 | 34 | #7,479 |
| 2011 | 28 | #8,567 |
| 2010 | 12 | #15,948 |
| 2009 | 13 | #15,369 |
| 2007 | 6 | #27,129 |
| 2004 | 5 | #28,742 |