Kastin is a very rare boys' name that peaked in 2015 and has grown less common since.
Kastin is a boy name. In 2025 it ranked #9,314 for boy births in the United States (and #19,226 across all names), given to 8 babies. Kastin first appears in 2000 and peaked in 2015 (12 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 8 | 8 | #9,314 |
| 2023 | 7 | 7 | #10,249 |
| 2022 | 8 | 8 | #9,433 |
| 2021 | 9 | 9 | #8,515 |
| 2020 | 9 | 9 | #8,398 |
| 2019 | 7 | 7 | #10,298 |
| 2018 | 12 | 12 | #6,923 |
| 2017 | 7 | 7 | #10,239 |
| 2016 | 8 | 8 | #9,285 |
| 2015 | 12 | 12 | #6,887 |
| 2014 | 11 | 11 | #7,296 |
| 2013 | 6 | 6 | #11,463 |
| 2011 | 5 | 5 | #13,350 |
| 2010 | 8 | 8 | #9,249 |
| 2003 | 7 | 7 | #9,167 |
| 2000 | 6 | 6 | #9,719 |