Kassius is a rare boys' name that peaked in 2022 and remains in steady use.
Kassius is predominantly a boy name. In 2025 it ranked #2,243 for boy births in the United States (and #4,819 across all names), given to 63 babies. Kassius first appears in 2001 and peaked in 2022 (124 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 63 | 63 | — | #2,243 |
| 2024 | 84 | 84 | — | #1,897 |
| 2023 | 106 | 106 | — | #1,636 |
| 2022 | 124 | 124 | — | #1,463 |
| 2021 | 117 | 117 | — | #1,519 |
| 2020 | 108 | 108 | #16,297 | #1,585 |
| 2019 | 116 | 116 | — | #1,483 |
| 2018 | 89 | 89 | #16,867 | #1,815 |
| 2017 | 88 | 88 | — | #1,757 |
| 2016 | 54 | 54 | — | #2,398 |
| 2015 | 44 | 44 | — | #2,740 |
| 2014 | 31 | 31 | — | #3,504 |
| 2013 | 34 | 34 | — | #3,234 |
| 2012 | 22 | 22 | — | #4,468 |
| 2011 | 21 | 21 | — | #4,584 |
| 2010 | 23 | 23 | — | #4,304 |
| 2009 | 17 | 17 | — | #5,432 |
| 2008 | 10 | 10 | — | #8,004 |
| 2007 | 18 | 18 | — | #5,114 |
| 2006 | 8 | 8 | — | #9,157 |
| 2004 | 7 | 7 | — | #9,459 |
| 2003 | 8 | 8 | — | #8,243 |
| 2001 | 5 | 5 | — | #11,489 |