Kassidee
Feminine · “descendant of Caiside”
Kassidee changes three letters of an Irish surname and none of the changes can be heard. The man who made that surname famous in America was not born with it; he took it from a rancher who had employed him.
How old is the name Kassidee?
Kassidee first appears in US birth records in 1989 — 36 years ago. The typical Kassidee alive today was born around 2007, making them about 18 years old. About 700 people named Kassidee are estimated to be alive in the US today.
When was the name Kassidee most popular?
Kassidee peaked in 2001, reaching #3631 nationally. See the whole 2001 chart.
Lists built from the same records:
Where it comes from
From Ó Caiside to Kassidee
The story of Kassidee
Butch Cassidy was born Robert LeRoy Parker in Utah, into a Mormon family, and took the surname from Mike Cassidy, a cattle rustler and ranch hand he had worked alongside as a teenager and admired. The Butch came later, from a spell working in a butcher's shop. The name he assembled is now attached to a train-robbing gang, a Bolivian gunfight of contested detail, and one very successful film, while the rancher who supplied it is a footnote. It is a useful reminder that a famous name is not always an inherited one: the surnames that carry the strongest associations in American memory frequently belonged to somebody who simply picked them up.
Meaning
descendant of Caiside
The surname belongs to a family that were hereditary physicians in Fermanagh, built on a personal name usually connected to an Irish word for curly-haired. This spelling alters the first letter, doubles a consonant and rewrites the ending, all silently.
How the name formed
- Ó Caiside
- Cassidy
- Kassidee
Related forms: Ó Caiside
Pronouncing Kassidee
KASS-i-dee
Three syllables with the stress at the front. All three altered letters are silent changes; the name is said exactly as the standard spelling is.
Nicknames for Kassidee
Moderate
What the data says
146 years of official birth records
The long climb, and where it stands now
The same years in position rather than babies
- First recorded
- 1989
- Most girls named
- 200136 — the highest on record
- Peak rank
- #3631reached in 2001
- Change vs 2021
- −11.1%8 in 2022, from 9
Rank is a position, a count is a headcount, and they move independently — a name can hold its rank while the number of babies behind it falls. Source: U.S. Social Security Administration.
Kassidee in other languages
The same name elsewhere
- Ó Caiside in Irish — related form
Kassidees among us
people named Kassidee are estimated to be alive in the US today
Estimated from SSA birth records and published actuarial life tables. Method
Is it right for you
Questions parents actually ask
Fashion outlook
Kassidee sits outside the current charts, and that is its own kind of answer: naming cycles can only date the names they carried up. A name this rare has no decade stamped on it — it cannot go out of fashion, because it was never in.
Based on 146 years of naming cycles. How we read them
The trade-off
- Both cuts produce short forms and neither sounds like the other.
- Front stress on three syllables is a comfortable English rhythm.
- The surname behind it is genuinely old and documented.
- Cassidy, Kassidy and Cassidee are all recorded and will be written for it.
- Three silent changes mean the spelling must be given aloud letter by letter.
- It reads as a surname, so strangers will assume it is a family name.
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Kassidee
Feminine
Frequently asked
- How many Kassidees are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 700 people named Kassidee are estimated to be alive in the US today.
- How popular is the name Kassidee in 2025?
- Kassidee is rarely given in the US today — it does not rank in the top 2000 girl names.
- Will my child share the name Kassidee with classmates?
- Kassidee will almost certainly be the only one in school.
More K names
The most-given names starting with K, all years combined.
Karen#1279 · Kimberly#302 · Kathleen#1150 · Katherine#186 · Kelly#851 · Kathryn#729 · Kayla#364 · Kathy#3249
Looking for what else is popular rather than what resembles Kassidee? See the current top 100.
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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