Cassidy
Mostly girls · KAS-i-dee · Irish
Cassidy is a name of Irish origin. In 2025 it ranked 741st for girls in the UK (54 babies) and 541st for girls in the US (558 babies).
What does Cassidy mean?
Irish: from the Irish surname Ó Caiside, perhaps meaning curly-haired
The Ó Caiside family were hereditary physicians to the Maguire chiefs of Fermanagh.
- Say it
- KAS-i-dee
More on Wiktionary.
Is Cassidy a girl's or a boy's name?
In recent years, Cassidy has been given to girls and boys, mostly girls. In 2025, it was given to 54 girls and 5 boys in the UK and 558 girls and 51 boys in the US.
How popular is Cassidy in the UK?
- Rank in 2025
- #741among girls
- Babies in 2025
- 54about 1 in 5,200 girls
- Five-year trend
- Steadydown 5% in five years
- Same name in a class
- under 1%chance among 15 girls
In 2025, 54 girls in the UK were named Cassidy, making it the 741st most popular name for girls. Five years earlier, in 2020, it was 645th. Its busiest year was 2009, with 77 girls. 5 boys were also named Cassidy in 2025 (3,747th for boys).
Half of all the girls named Cassidy in the UK since 1996 were born between 2006 and 2018, the years shaded on the chart below.
In 2025, 59 girls in the UK were given Cassidy or a name that sounds the same. With every name's spellings counted this way, that ranks #641, up from #741 for this spelling alone.
- Cassidy 54
- Kassidy 5
In 2025, 92% of the babies named Cassidy in the UK were girls.
Among girls in 2025, it was 807th in England and Wales, 474th in Scotland and 397th in Northern Ireland.
Cassidy in the UK, year by year
| Year | Girls | Rank |
|---|---|---|
| 2025 | 54 | #741 |
| 2024 | 59 | #694 |
| 2023 | 60 | #661 |
| 2022 | 52 | #757 |
| 2021 | 55 | #745 |
| 2020 | 64 | #645 |
| 2019 | 58 | #728 |
| 2018 | 61 | #714 |
| 2017 | 60 | #737 |
| 2016 | 58 | #752 |
| 2015 | 64 | #683 |
| 2014 | 52 | #812 |
| 2013 | 60 | #729 |
| 2012 | 74 | #627 |
| 2011 | 72 | #617 |
| 2010 | 71 | #617 |
| 2009 | 77 | #558 |
| 2008 | 65 | #634 |
| 2007 | 58 | #662 |
| 2006 | 65 | #587 |
| 2005 | 56 | #633 |
| 2004 | 50 | #648 |
| 2003 | 56 | #586 |
| 2002 | 49 | #619 |
| 2001 | 38 | #722 |
| 2000 | 46 | #635 |
| 1999 | 30 | #819 |
| 1998 | 32 | #789 |
| 1997 | 29 | #854 |
| 1996 | 18 | #1,122 |
How popular is Cassidy in the US?
- Rank in 2025
- #541among girls
- Babies in 2025
- 558about 1 in 2,900 girls
- Five-year trend
- Fallingdown 27% in five years
- Same name in a class
- under 1%chance among 15 girls
In 2025, 558 girls in the US were named Cassidy, making it the 541st most popular name for girls. Five years earlier, in 2020, it was 411th. Its busiest year was 1999, with 3,395 girls. It first appears in the records in 1969. 51 boys were also named Cassidy in 2025 (2,572nd for boys).
2025 had fewer girls named Cassidy than any year since 1990.
Half of all the girls named Cassidy in the US since 1880 were born between 1997 and 2009, the years shaded on the chart below.
In 2025, 819 girls in the US were given Cassidy or a name that sounds the same. With every name's spellings counted this way, that ranks #403, up from #541 for this spelling alone.
In 1971, 40% of the babies named Cassidy in the US were girls. By 2025 it was 92%, with more girls than boys since 1975.
Cassidy in the US, year by year
| Year | Girls | Rank |
|---|---|---|
| 2025 | 558 | #541 |
| 2024 | 646 | #478 |
| 2023 | 620 | #495 |
| 2022 | 661 | #478 |
| 2021 | 655 | #478 |
| 2020 | 765 | #411 |
| 2019 | 865 | #368 |
| 2018 | 869 | #361 |
| 2017 | 1,003 | #326 |
| 2016 | 1,123 | #289 |
| 2015 | 1,236 | #257 |
| 2014 | 1,311 | #247 |
| 2013 | 1,276 | #250 |
| 2012 | 1,140 | #280 |
| 2011 | 1,126 | #282 |
| 2010 | 1,286 | #250 |
| 2009 | 1,360 | #244 |
| 2008 | 1,491 | #228 |
| 2007 | 1,657 | #207 |
| 2006 | 1,771 | #199 |
| 2005 | 1,833 | #189 |
| 2004 | 2,007 | #168 |
| 2003 | 2,235 | #150 |
| 2002 | 2,634 | #131 |
| 2001 | 3,029 | #107 |
| 2000 | 3,163 | #107 |
| 1999 | 3,395 | #99 |
| 1998 | 3,045 | #113 |
| 1997 | 3,143 | #105 |
| 1996 | 2,844 | #109 |
| 1995 | 3,042 | #108 |
| 1994 | 2,306 | #139 |
| 1993 | 1,028 | #267 |
| 1992 | 725 | #354 |
| 1991 | 610 | #418 |
| 1990 | 521 | #469 |
| 1989 | 482 | #487 |
| 1988 | 405 | #538 |
| 1987 | 396 | #521 |
| 1986 | 371 | #546 |
| 1985 | 416 | #491 |
| 1984 | 406 | #492 |
| 1983 | 358 | #530 |
| 1982 | 219 | #756 |
| 1981 | 157 | #942 |
| 1980 | 131 | #1,077 |
| 1979 | 108 | #1,204 |
| 1978 | 102 | #1,221 |
| 1977 | 72 | #1,514 |
| 1976 | 62 | #1,602 |
| 1975 | 54 | #1,729 |
| 1974 | 36 | #2,213 |
| 1973 | 28 | #2,565 |
| 1972 | 32 | #2,311 |
| 1971 | 17 | #3,650 |
| 1970 | 12 | #4,491 |
| 1969 | 5 | #7,469 |
Nicknames for Cassidy
Names like Cassidy
Names given in the same years and the same naming tradition, with a similar sound.
Caoimhe Keira Aoibheann Kiara Brianna Eireann Eden Teagan Raegan Clodagh Bree Caragh
Other spellings of Cassidy
Names related to Cassidy
More Irish names
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