Kasey
Masculine · “vigilant”
Kasey is given to both — 12,623 boys and 33,326 girls since 1880. See Kasey as a girl nameSee other names given to both
Kasey is the K-spelling of Casey, an Irish surname that crossed the Atlantic and settled into use as a first name for children of either sex. Behind it stands the Gaelic Ó Cathasaigh, a family name built on a word for watchfulness. Said aloud it is two open syllables, KAY-see, with the stress falling first and the ending trailing off — the same easy shape that Riley, Casey and Cody share.
How old is the name Kasey?
Kasey first appears in US birth records in 1952 — 73 years ago. The typical Kasey alive today was born around 1993, making them about 32 years old. About 12,000 people named Kasey are estimated to be alive in the US today.
When was the name Kasey most popular?
Kasey peaked in 1988, reaching #454 nationally. Today it ranks #1159, 705 places below that high. See the whole 1988 chart.
Kasey appears on this list:
Where it comes from
From cathasach to Kasey
The story of Kasey
The name begins as an Irish family name, Ó Cathasaigh, borne by several unrelated kindreds in Cork, Limerick, Dublin and Fermanagh. Anglicized as Casey, it traveled with Irish emigration to the United States, where — as happened to so many Irish surnames — it slipped loose from the family and became a given name in its own right. Kasey is the K-spelled version of that given name, part of a broad American habit of swapping C for K in short, bright names. Because it arrived by way of a surname rather than a saint's or a king's name, it was never tied to one sex, and has been given to boys and girls alike ever since.
Meaning
vigilant, watchful
The surname Ó Cathasaigh derives from the Irish adjective cathasach, 'vigilant' or 'watchful'. Kasey is a respelling of the anglicized surname Casey, and carries that sense with it.
How the name formed
- cathasach
- Ó Cathasaigh
- Casey
- Kasey
Related forms: Casey · Ó Cathasaigh · Kacey · Kacie · Cayce
Pronouncing Kasey
KAY-see
Stress on the first syllable. The pronunciation is the same as Casey's, and English speakers get it right on sight — it is only the spelling that needs saying.
Nicknames for Kasey
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
- 1952
- Most boys named
- 1990467 — the highest on record
- Peak rank
- #454reached in 1988
- Change vs 2024
- 0.0%180 in 2025, from 180
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.
Kasey in other languages
The same name elsewhere
- Casey in English — spelling variant
- Ó Cathasaigh in Irish — related form
- Kacey in English — spelling variant
- Kacie in English — spelling variant
- Cayce in English — spelling variant
Strongest US states over the last decade: Texas, California, New York.
Kaseys among us
people named Kasey are estimated to be alive in the US today
About 1 boy in 9,489 born in 2025 was named Kasey
Estimated from SSA birth records and published actuarial life tables. Method
Spellings of Kasey
- #1159
- Kasey on the 2025 chart
- #245
- counting every spelling
The SSA counts spellings, not names. Kasey went to 180 boys in 2025, but Casey and Kacey are the same name said out loud. Together the 3 spellings went to 1,434, which makes it the 245th most-given boys’ name of the year — 914 places above the chart.
About 1 boy in 1,191 born in 2025 was given one of these spellings — against 1 in 9,489 for Kasey itself.
Spellings are grouped by a fixed rule that folds interchangeable English spellings of one sound (ck/k, ph/f, x/ks, a non-initial y for i) and keeps vowels apart, so Sean and Shawn stay separate names. It errs towards splitting: a family here is never larger than the truth. SSA national data, 2025. Method
Is it right for you
What happens to a name after it peaks
The Barbara test
Every popular name lives one long story — a climb, a peak, a slow settling back. Kasey's later chapters haven't been written yet, so we borrowed them: Barbara climbed just as high around 1938, and its whole arc is on record. Line the two peaks up, and Barbara's path sketches the road Kasey is walking now.
Kasey is on its second act. Revived names age gently: the generation that wore them first is far enough away that the name feels classic rather than dated.
A scored estimate from 146 years of naming cycles — not a prophecy. Great names outlive statistics. How this is scored
Where Kasey is headed
Kasey looks set to keep climbing gently, with roughly 32% more babies a year by 2030 if the current curve holds.
Medium confidence — fitted on official counts through 2025.
A damped-trend projection of the official birth data — a sketch of momentum, not a promise. Every name's forecast, ranked.
Kasey beside its neighbors
The names ranked closest to Kasey in 2025, in babies rather than position — the bars are to scale.
US boys given each name in 2025.
The trade-off
- Reads correctly at first glance for English speakers, because Casey is already familiar to everyone; only the K needs spelling out.
- Works for a child and for an adult signing a contract, as surname-derived names generally do.
- Has real short forms in use — Kase, K.C. — without requiring one.
- Given to boys and girls alike, so it carries no correction with it if the child prefers not to be pinned down.
- A documented line back to Irish family names, not a recent coinage.
- Casey is the default spelling in most people's heads. Expect a lifetime of saying 'Kasey with a K' — never a crisis, but a small recurring tax.
- Because both sexes carry it, people who see the name in writing before meeting the child will guess wrong sometimes. Many families find this a non-issue; some find it tiresome on forms.
- The C-for-K respelling belongs to a recognizable stretch of American naming taste, so the name can read as of a particular era to some ears — though the underlying Casey is far older than that fashion.
- It is uncommon enough now that a child is unlikely to share it with a classmate, which suits some families and leaves others wishing for more company.
Nobody names a baby alone.
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What they receive
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Kasey
Masculine · #1159 in the U.S.
Frequently asked
- How many Kaseys are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 12,000 people named Kasey are estimated to be alive in the US today.
- How do you spell Kasey?
- Kasey is one of 3 recorded spellings. Casey is the more common one — 1,072 births in 2025 against 180 for Kasey.
- How popular is the name Kasey in 2025?
- Kasey ranks #1159 among US boy names in 2025, with 180 babies given the name.
- How rare is the name Kasey?
- About 1 in every 9,489 US boys born in 2025 was named Kasey — 180 in all.
- Will my child share the name Kasey with classmates?
- Kasey will almost certainly be the only one in school.
Ranked beside Kasey
Names sitting at a similar level of popularity right now.
Adrien#1159 · Kalel#1159 · Umar#1159 · Rogelio#1159 · Booker#1159 · Gianluca#1156 · Yasir#1156 · Osman#1156
Looking for what else is popular rather than what resembles Kasey? See the current top 100.
Choosing between Kasey and another name?
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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