Jamesyn is a rare variant of Jameson that peaked in 2019 and has grown less common since.
Jamesyn is predominantly a boy name. In 2025 it ranked #7,381 for boy births in the United States (and #15,501 across all names), given to 11 babies. Jamesyn first appears in 2006 and peaked in 2019 (20 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 11 | 11 | — | #7,381 |
| 2024 | 21 | 21 | #12,702 | #6,310 |
| 2023 | 19 | 19 | #12,694 | #7,073 |
| 2022 | 14 | 14 | #14,308 | #9,345 |
| 2021 | 22 | 22 | #11,545 | #6,163 |
| 2020 | 12 | 12 | — | #6,787 |
| 2019 | 38 | 38 | #6,539 | #4,876 |
| 2018 | 28 | 28 | #10,124 | #5,183 |
| 2017 | 26 | 26 | #7,616 | #7,299 |
| 2016 | 29 | 29 | #9,106 | #5,415 |
| 2015 | 15 | 15 | #11,295 | #11,270 |
| 2014 | 19 | 19 | #9,796 | #9,134 |
| 2013 | 17 | 17 | #9,859 | #11,333 |
| 2012 | 7 | 7 | — | #10,164 |
| 2011 | 9 | 9 | #11,580 | — |
| 2009 | 8 | 8 | — | #9,349 |
| 2008 | 14 | 14 | #12,000 | #13,373 |
| 2007 | 7 | 7 | #14,522 | — |
| 2006 | 5 | 5 | #18,313 | — |