Kaysin is a rare variant of Kayson that peaked in 2020 and remains in steady use.
Kaysin is predominantly a boy name. In 2025 it ranked #4,321 for boy births in the United States (and #9,227 across all names), given to 24 babies. Kaysin first appears in 2006 and peaked in 2020 (31 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 24 | 24 | — | #4,321 |
| 2024 | 25 | 25 | — | #4,264 |
| 2023 | 31 | 31 | — | #3,672 |
| 2022 | 30 | 30 | — | #3,731 |
| 2021 | 28 | 28 | — | #3,875 |
| 2020 | 31 | 31 | — | #3,534 |
| 2019 | 27 | 27 | — | #3,954 |
| 2018 | 21 | 21 | — | #4,674 |
| 2017 | 19 | 19 | — | #5,027 |
| 2016 | 21 | 21 | — | #4,697 |
| 2015 | 20 | 20 | — | #4,809 |
| 2014 | 25 | 25 | — | #4,076 |
| 2013 | 14 | 14 | — | #6,085 |
| 2012 | 13 | 13 | — | #6,496 |
| 2011 | 19 | 19 | #18,196 | #6,104 |
| 2010 | 11 | 11 | — | #7,339 |
| 2009 | 14 | 14 | — | #6,275 |
| 2007 | 5 | 5 | — | #13,423 |
| 2006 | 5 | 5 | — | #13,058 |