Cassiopeia vs Cassidy

Side-by-side comparison of Cassiopeia and Cassidy — popularity rank, total births, peak decade, and historical trends from Social Security Administration data.

Name A

Cassiopeia

Girl name · Rank #8552

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Name B

Cassidy

Girl name · Rank #476

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Which name is more popular?

Metric Cassiopeia Cassidy
Current Rank #8552 #476
Total Births (all years) 380 60,279
Peak Year 2022 1999
Peak Year Births 18 3,395
Peak Decade 1980ss 2000ss
Gender Girl Girl
First Recorded Year 1979 1969

Births by Decade

Decade Cassiopeia Cassidy
1960ss — 5
1970ss 9 523
1980ss 109 3,341
1990ss 54 20,659
2000ss 50 21,177
2010ss 84 11,232
2020ss 74 3,342

Recent Annual Births (2014–present)

Year Cassiopeia Cassidy
2014 12 1,311
2015 9 1,236
2016 7 1,123
2017 10 1,002
2018 12 869
2019 11 865
2020 10 765
2021 16 655
2022 18 659
2023 18 617
2024 12 646

Data Sources

Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications — National Data, ssa.gov/oact/babynames.
Source: SSA Annual Name Rankings, 1979–2024.

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