Declen is a boy name. In 2025 it ranked #27151 for boy births in the United States, given to 5 babies. Declen first appears in the data in 2011 and reached its peak in 2015 (11 births). The chart below shows how the name has risen and fallen over time.
| Year | U.S. births | Rank |
|---|---|---|
| 2025 | 5 | #27,151 |
| 2022 | 10 | #17,188 |
| 2020 | 5 | #27,668 |
| 2019 | 5 | #28,326 |
| 2018 | 8 | #20,319 |
| 2017 | 6 | #25,370 |
| 2016 | 8 | #20,747 |
| 2015 | 11 | #16,591 |
| 2014 | 6 | #26,091 |
| 2013 | 8 | #21,191 |
| 2012 | 5 | #30,571 |
| 2011 | 5 | #31,234 |