Cassidy
Girl name · #541 in 2025 · Uniqueness 64/100
Cassidy is currently the #541 girl name in the United States — 558 babies received it in 2025. A decade ago it stood at #257, so the name has been falling over the past ten years. Roughly one in every 3,226 girls born in 2025 was named Cassidy.
The 56-year story
Cassidy first appears in the Social Security records in 1969, when 5 girls received the name. Its peak came in 1999, when 3,395 girls were named Cassidy — good for #99 that year. Today's parents encounter it on its way down the popularity curve, which for many parents is exactly the appeal. Following the curve matters more than today's snapshot: a name's position on its rise-peak-decline arc is the best predictor of how common it will feel in a kindergarten class five years from now.
Babies named Cassidy per year, 1880–2025. Source: SSA.
Unlock the 5-year forecast and compare Cassidy against up to 5 other names.
Uniqueness: will there be another Cassidy in class?
Cassidy scores 64 out of 100 on our uniqueness scale, which blends current rarity with five-year momentum — putting it in the "distinctive" band. That middle band is the sweet spot many parents hunt for: recognizable without being everywhere.
Where Cassidy is most common
Geography matters for names, and Cassidy is no exception. In 2025 the states with the most Cassidys were CA (70), TX (49), PA (37), NY (29), NC (24). Raw counts naturally favor populous states, but the spread still hints at where the name is part of the local naming culture.
Names like Cassidy
Statistically, parents drawn to Cassidy tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Kassidy, Destiny, Cameron, Sydney, and Alexis.
KassidyDestinyCameronSydneyAlexisMikaylaCheyenneSierra
Rank history (last 25 years)
| Year | Babies named Cassidy | 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 |
Frequently asked questions
Is Cassidy a popular girl name?
Cassidy ranked #541 among girls in 2025 with 558 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #257.
When was the name Cassidy most popular?
Cassidy peaked in 1999, when 3,395 American girls received the name (ranked #99 that year). Since 1999 the name has declined from that high.
How rare is the name Cassidy?
In 2025, roughly 1 in 3,226 newborn American girls was named Cassidy. It scores 64/100 on our uniqueness scale (rarity blended with momentum), which we classify as "distinctive".
Data source: U.S. Social Security Administration name statistics, 1880–2025, national and state files. Counts reflect Social Security card applications; names with fewer than 5 occurrences in a state-year are suppressed by the SSA.