Cassidy
How to say it: KAS-uh-dee · /ˈkæsədi/
From Irish Gaelic surname 'O Caiside', meaning 'descendant of Caiside', with 'cas' possibly meaning 'curly-haired'.
Cassidy was the 404th most popular girls’ name in the United States in 2025, given to 558 babies (Social Security Administration). Its busiest decade was the 1990s, its births are down about 58% in ten years, and it is projected to slip to #541 by 2030.
Updated · SSA 2025 data, published May 2026 · Insee 2025 data, published July 2026 · How we compute these figures
Key facts
| Rank among girls’ names, 2025 | #404 |
|---|---|
| Babies born in 2025 | 558 |
| Share of births | 1 in 4,154 |
| Peak decade | 1990s |
| Change over 10 years | −58% |
| Projected rank for 2030 (estimate) | #541 |
| In France, 2025 | #894 among girls’ names, 20 births |
Sources: Social Security Administration (SSA), Insee (France). How we compute these figures.
Its life, decade by decade
Cassidy belongs almost entirely to the last forty years. Its high point came in the 1990s and it now stands well below that peak with more slipping expected.
What goes with it
Crisp edges mix with breathy softness through its length. Cassie works as a short form and Delaney shares the same style.
Nicknames
- Cass
- Cassie
Honouring a Cassidy in the family
In the classroom
In a class of 25 children born in 2025, the chance that another child is called Cassidy is about 1 in 174.
Around the world
This spelling is used in English, French, Irish.
In France: #894 for girls in 2025.
Famous people named Cassidy
- Cassidy Freeman (born 1982)American actress and singer
- Cassidy Hutchinson (born 1996)American political staffer
- Cassidy Rae (born 1976)American actress
From Wikidata and Wikipedia
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