Calyx is a very rare name used for both girls and boys that peaked in 2022 and remains in steady use.
Calyx is predominantly a boy name. In 2025 it ranked #6,518 for boy births in the United States (and #13,692 across all names), given to 13 babies. Calyx first appears in 1997 and peaked in 2022 (20 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 13 | 13 | — | #6,518 |
| 2024 | 16 | 16 | — | #5,701 |
| 2023 | 19 | 19 | — | #5,104 |
| 2022 | 25 | 25 | #15,753 | #4,875 |
| 2021 | 18 | 18 | — | #5,147 |
| 2020 | 12 | 12 | — | #6,696 |
| 2019 | 13 | 13 | — | #6,471 |
| 2018 | 13 | 13 | — | #6,406 |
| 2017 | 9 | 9 | — | #8,267 |
| 2016 | 11 | 11 | #16,733 | #10,963 |
| 2015 | 11 | 11 | #16,951 | #10,892 |
| 2014 | 22 | 22 | #12,157 | #6,039 |
| 2013 | 8 | 8 | — | #8,925 |
| 2011 | 10 | 10 | — | #7,595 |
| 2007 | 5 | 5 | — | #12,651 |
| 2002 | 5 | 5 | #15,853 | — |
| 1999 | 5 | 5 | #14,784 | — |
| 1998 | 5 | 5 | #14,505 | — |
| 1997 | 7 | — | #11,047 | — |