Cassidy
From the Irish surname, Anglicized from Ó Caiside (“descendant of Caiside”), from cas (“curly-haired”).
Every Cassidy since 1968 — 64,583 of them. Popularity, births, and rankings for each year, from official Social Security records.
The story of Cassidy
Cassidy is uncommon for girls in the United States, ranked #541 in 2025 with 558 babies given the name. It is currently declining compared with a decade ago.
Since 1968, 64,583 American babies have been named Cassidy — about 94% girls and 6% boys, making it a genuinely unisex name. Its peak came in 1999, when 3,449 newborns received the name — the signature sound of the 1990s.
The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Cassidy stood among all girls' names in any year, or use the compare tool to plot it against other names.
Cassidy year by year
Every year since 2001, and five-year steps back to 1880. Rank is within each sex.
| Year | Girls | Girls rank | Boys | Boys rank |
|---|---|---|---|---|
| 2025 | 558 | #541 | 51 | #2,575 |
| 2024 | 646 | #478 | 61 | #2,317 |
| 2023 | 620 | #495 | 55 | #2,445 |
| 2022 | 661 | #478 | 49 | #2,682 |
| 2021 | 655 | #478 | 43 | #2,871 |
| 2020 | 765 | #411 | 45 | #2,735 |
| 2019 | 865 | #368 | 55 | #2,430 |
| 2018 | 869 | #361 | 76 | #1,939 |
| 2017 | 1,003 | #326 | 70 | #2,020 |
| 2016 | 1,123 | #289 | 59 | #2,258 |
| 2015 | 1,236 | #257 | 42 | #2,817 |
| 2014 | 1,311 | #247 | 45 | #2,671 |
| 2013 | 1,276 | #250 | 55 | #2,306 |
| 2012 | 1,140 | #280 | 50 | #2,497 |
| 2011 | 1,126 | #282 | 50 | #2,481 |
| 2010 | 1,286 | #251 | 51 | #2,435 |
| 2009 | 1,360 | #244 | 55 | #2,354 |
| 2008 | 1,491 | #228 | 66 | #2,092 |
| 2007 | 1,657 | #207 | 53 | #2,418 |
| 2006 | 1,771 | #199 | 69 | #1,949 |
| 2005 | 1,833 | #189 | 40 | #2,713 |
| 2004 | 2,007 | #168 | 59 | #2,025 |
| 2003 | 2,235 | #150 | 24 | #3,641 |
| 2002 | 2,634 | #131 | 34 | #2,766 |
| 2001 | 3,029 | #107 | 39 | #2,494 |
| 2000 | 3,163 | #107 | 42 | #2,302 |
| 1995 | 3,042 | #108 | 87 | #1,246 |
| 1990 | 521 | #471 | 125 | #923 |
| 1985 | 416 | #491 | 151 | #719 |
| 1980 | 131 | #1,077 | 64 | #1,135 |
| 1975 | 54 | #1,732 | 32 | #1,596 |
| 1970 | 12 | #4,529 | 13 | #2,641 |
| 1965 | — | — | — | — |
| 1960 | — | — | — | — |
| 1955 | — | — | — | — |
| 1950 | — | — | — | — |
| 1945 | — | — | — | — |
| 1940 | — | — | — | — |
| 1935 | — | — | — | — |
| 1930 | — | — | — | — |
| 1925 | — | — | — | — |
| 1920 | — | — | — | — |
| 1915 | — | — | — | — |
| 1910 | — | — | — | — |
| 1905 | — | — | — | — |
| 1900 | — | — | — | — |
| 1895 | — | — | — | — |
| 1890 | — | — | — | — |
| 1885 | — | — | — | — |
| 1880 | — | — | — | — |
Famous people named Cassidy
- Cassidy Freeman Actor · b. 1982
- Cassidy Singer · b. 1982
Ranked by global fame across Wikipedia editions (Pantheon project, MIT).
Frequently asked questions
What does the name Cassidy mean?
From the Irish surname, Anglicized from Ó Caiside (“descendant of Caiside”), from cas (“curly-haired”).
How popular is the name Cassidy in 2025?
Cassidy ranked #541 among girls' names in the United States in 2025, with 558 babies given the name, according to Social Security Administration data.
How many people are named Cassidy?
64,583 babies have been named Cassidy in the United States since 1968, based on Social Security card applications.
When was the name Cassidy most popular?
Cassidy peaked in 1999, when 3,449 newborns received the name.
Is Cassidy a boy or girl name?
Cassidy is used for both: about 94% of babies named Cassidy have been girls and 6% boys.
Is the name Cassidy rising or falling?
Cassidy is declining — less popular now than a decade ago.
Who are famous people named Cassidy?
Well-known people named Cassidy include Cassidy Freeman (actor), Cassidy (singer).