Casidy
Every Casidy since 1980 — 347 of them. Popularity, births, and rankings for each year, from official Social Security records.
The story of Casidy
Casidy is not currently in use for newborns in the United States — fewer than five babies received the name in 2025. Its story lives in the historical record below.
Since 1980, 347 American babies have been named Casidy. Its peak came in 2001, when 26 newborns received the name — the signature sound of the 2000s.
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 Casidy stood among all girls' names in any year, or use the compare tool to plot it against other names.
Casidy year by year
Every year since 2001, and five-year steps back to 1880. Rank is within each sex.
| Year | Girls | Girls rank |
|---|---|---|
| 2025 | — | — |
| 2024 | — | — |
| 2023 | — | — |
| 2022 | — | — |
| 2021 | — | — |
| 2020 | — | — |
| 2019 | — | — |
| 2018 | — | — |
| 2017 | — | — |
| 2016 | 7 | #13,177 |
| 2015 | — | — |
| 2014 | 5 | #17,081 |
| 2013 | 8 | #12,217 |
| 2012 | 10 | #10,596 |
| 2011 | 10 | #10,552 |
| 2010 | 12 | #9,350 |
| 2009 | 5 | #17,831 |
| 2008 | 12 | #9,600 |
| 2007 | 7 | #14,216 |
| 2006 | 11 | #10,046 |
| 2005 | 16 | #7,212 |
| 2004 | 12 | #8,827 |
| 2003 | 14 | #7,667 |
| 2002 | 22 | #5,290 |
| 2001 | 26 | #4,588 |
| 2000 | 20 | #5,529 |
| 1995 | 15 | #6,016 |
| 1990 | 8 | #9,390 |
| 1985 | 6 | #9,460 |
| 1980 | 5 | #10,602 |
| 1975 | — | — |
| 1970 | — | — |
| 1965 | — | — |
| 1960 | — | — |
| 1955 | — | — |
| 1950 | — | — |
| 1945 | — | — |
| 1940 | — | — |
| 1935 | — | — |
| 1930 | — | — |
| 1925 | — | — |
| 1920 | — | — |
| 1915 | — | — |
| 1910 | — | — |
| 1905 | — | — |
| 1900 | — | — |
| 1895 | — | — |
| 1890 | — | — |
| 1885 | — | — |
| 1880 | — | — |
Frequently asked questions
How popular is the name Casidy in 2025?
Casidy did not appear in the 2025 Social Security data, which means fewer than five babies received the name that year.
How many people are named Casidy?
347 babies have been named Casidy in the United States since 1980, based on Social Security card applications.
When was the name Casidy most popular?
Casidy peaked in 2001, when 26 newborns received the name.
Is Casidy a boy or girl name?
Casidy is overwhelmingly a girl's name — 100% of babies with the name.
Is the name Casidy rising or falling?
Casidy is declining — less popular now than a decade ago.