Cassiel is a rare name used for both girls and boys that peaked in 2025 and remains in steady use.
Cassiel is predominantly a boy name. In 2025 it ranked #2,488 for boy births in the United States (and #5,353 across all names), given to 54 babies. Cassiel first appears in 1999 and peaked in 2025 (54 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 54 | 54 | — | #2,488 |
| 2024 | 30 | 30 | — | #3,710 |
| 2023 | 28 | 28 | — | #3,906 |
| 2022 | 46 | 46 | — | #2,799 |
| 2021 | 41 | 41 | #12,470 | #3,371 |
| 2020 | 30 | 30 | #12,403 | #4,299 |
| 2019 | 38 | 38 | #16,012 | #3,433 |
| 2018 | 50 | 50 | #14,141 | #2,759 |
| 2017 | 49 | 49 | #10,115 | #3,017 |
| 2016 | 46 | 46 | #13,178 | #3,008 |
| 2015 | 31 | 31 | #14,873 | #4,095 |
| 2014 | 27 | 27 | #17,084 | #4,413 |
| 2013 | 18 | 18 | — | #5,007 |
| 2012 | 15 | 15 | — | #5,757 |
| 2011 | 14 | 14 | #15,213 | #8,888 |
| 2010 | 11 | 11 | — | #7,152 |
| 2009 | 5 | 5 | — | #12,787 |
| 2001 | 5 | 5 | #15,797 | — |
| 1999 | 5 | 5 | #14,821 | — |