Cassiopeia is a rare girls' name that has climbed to its highest level yet, peaking in 2022.
Cassiopeia is a girl name. In 2025 it ranked #8,977 for girl births in the United States (and #15,285 across all names), given to 11 babies. Cassiopeia first appears in 1979 and peaked in 2022 (18 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 11 | 11 | #8,977 |
| 2024 | 12 | 12 | #8,555 |
| 2023 | 18 | 18 | #6,471 |
| 2022 | 18 | 18 | #6,509 |
| 2021 | 16 | 16 | #7,026 |
| 2020 | 10 | 10 | #9,700 |
| 2019 | 11 | 11 | #9,244 |
| 2018 | 12 | 12 | #8,716 |
| 2017 | 10 | 10 | #10,116 |
| 2016 | 7 | 7 | #13,179 |
| 2015 | 9 | 9 | #11,079 |
| 2014 | 12 | 12 | #9,096 |
| 2013 | 5 | 5 | #17,062 |
| 2012 | 5 | 5 | #17,405 |
| 2011 | 5 | 5 | #17,299 |
| 2010 | 8 | 8 | #12,505 |
| 2007 | 5 | 5 | #18,155 |
| 2005 | 12 | 12 | #9,011 |
| 2004 | 8 | 8 | #11,819 |
| 2002 | 9 | 9 | #10,393 |
| 2001 | 6 | 6 | #13,838 |
| 2000 | 10 | 10 | #9,291 |
| 1999 | 8 | 8 | #10,531 |
| 1997 | 8 | — | #9,958 |
| 1996 | 7 | — | #10,770 |
| 1995 | 6 | — | #12,040 |
| 1994 | 5 | — | #13,792 |
| 1992 | 5 | — | #13,629 |
| 1991 | 6 | — | #11,734 |
| 1990 | 9 | — | #8,599 |
| 1989 | 9 | — | #8,147 |
| 1988 | 12 | — | #6,331 |
| 1987 | 13 | — | #5,648 |
| 1986 | 14 | — | #5,220 |
| 1985 | 8 | — | #7,662 |
| 1984 | 15 | — | #4,769 |
| 1983 | 12 | — | #5,502 |
| 1982 | 13 | — | #5,247 |
| 1981 | 13 | — | #5,298 |
| 1979 | 9 | — | #6,772 |