Cassidy
From the Irish surname O Caiside, descended from a byname built on cas, meaning curly, probably describing hair. It later crossed over to use as a first name.
Cassidy in 2025
Cassidy was given to 609 babies in the United States in 2025 — 51 boys and 558 girls, making it the 998th most popular name of the year. That is roughly one in every 5,444 babies born.
The history of Cassidy
Cassidy reached its highest point in 1999, when 3,449 babies were given the name, ranking 201st that year.
Across the 58 years of records since 1968, 64,583 babies have been named Cassidy. Half of them were born before 2001, which places the name's centre of gravity with Generation Z.
Cassidy by decade
| Decade | Babies named Cassidy | Best rank |
|---|---|---|
| 1960s | 15 | 7,062 |
| 1970s | 874 | 1,600 |
| 1980s | 4,477 | 718 |
| 1990s | 21,559 | 201 |
| 2000s | 21,661 | 234 |
| 2010s | 11,788 | 495 |
| 2020s | 4,209 | 777 |
Where Cassidy is heading
Cassidy has fallen 52% over the past decade, from 1,278 babies in 2015 to 609 in 2025.
Names like Cassidy
Names that rose and fell at the same time as Cassidy.