Kasie
Feminine · “Irish O Cathasaigh”
Kasie is overwhelmingly a girls’ name — 4,202 girls against 21 boys since 1880.
Casey Jones was not called Casey by his family. John Luther Jones came from Cayce, Kentucky, and the railroad gave him the town's name; the ballad written after he died in 1900 gave it to the country.
How old is the name Kasie?
Kasie first appears in US birth records in 1963 — 62 years ago. The typical Kasie alive today was born around 1989, making them about 36 years old. About 4,100 people named Kasie are estimated to be alive in the US today.
When was the name Kasie most popular?
Kasie peaked in 1987, reaching #810 nationally. Today it ranks #10107, 9,297 places below that high. See the whole 1987 chart.
Lists built from the same records:
Where it comes from
From O Cathasaigh to Kasie
The story of Kasie
On 30 April 1900 an engineer named John Luther Jones died at the throttle of the Cannonball outside Vaughan, Mississippi, having stayed aboard to brake his train. His nickname came from Cayce, the Kentucky town he grew up near, and the song written about him by a fellow railroad man spread through vaudeville and became one of the best known American ballads of the century. It carried the name far beyond the small Irish-American population that had it as a surname, and Casey became a first name for boys and then, from the 1970s onward, for girls. Kasie belongs to the later female wave and to the American habit of respelling a name once it is established, using K for the hard C and -ie for the final sound.
Meaningscholars disagree
Irish O Cathasaigh, from cathasach, vigilant
Casey is the anglicized Irish surname O Cathasaigh, from cathasach, generally read as vigilant or watchful. The famous American bearer got the name from the town of Cayce, Kentucky, by a separate route. Kasie is a modern American respelling; its peak is 1987.
How the name formed
- O Cathasaigh
- Casey
- Kasie
Related forms: O Cathasaigh · Casey · Kacie
Pronouncing Kasie
KAY-see
Two syllables, stress on the first. Casey, Kacie, Kasey and Kasie are homophones; four spellings share one sound.
Nicknames for Kasie
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
- 1963
- Most girls named
- 1987216 — the highest on record
- Peak rank
- #810reached in 1987
- Change vs 2024
- +28.6%9 in 2025, from 7
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.
Kasie in other languages
The same name elsewhere
- O Cathasaigh in Irish — same name
- Casey in English — spelling variant
- Kacie in English — spelling variant
Strongest US states over the last decade: California.
Kasies among us
people named Kasie are estimated to be alive in the US today
About 1 girl in 178,585 born in 2025 was named Kasie
Estimated from SSA birth records and published actuarial life tables. Method
Spellings of Kasie
- #10107
- Kasie on the 2025 chart
- #839
- counting every spelling
The SSA counts spellings, not names. Kasie went to 9 girls in 2025, but Kacie and Casie are the same name said out loud. Together the 3 spellings went to 121, which makes it the 839th most-given girls’ name of the year — 9,268 places above the chart.
About 1 girl in 13,283 born in 2025 was given one of these spellings — against 1 in 178,585 for Kasie 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 Bettylou test
Every popular name lives one long story — a climb, a peak, a slow settling back. Kasie's later chapters haven't been written yet, so we borrowed them: Bettylou climbed just as high around 1927, and its whole arc is on record. Line the two peaks up, and Bettylou's path sketches the road Kasie is walking now.
Kasie sits in the calm middle of the cycle — neither chasing a wave nor sliding off one. Middle-of-the-cycle names age slowly and predictably.
A scored estimate from 146 years of naming cycles — not a prophecy. Great names outlive statistics. How this is scored
Kasie beside its neighbors
The names ranked closest to Kasie in 2025, in babies rather than position — the bars are to scale.
US girls given each name in 2025.
The trade-off
- KC works as a set of initials that says the name aloud.
- Two syllables, five letters, nothing silent.
- The Irish surname behind it is genuine and documented.
- At least four spellings compete and Casey is the standard.
- The name is used for both sexes.
- The 1987 peak dates this spelling.
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What they receive
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Kasie
Feminine · #10107 in the U.S.
Frequently asked
- How many Kasies are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 4,100 people named Kasie are estimated to be alive in the US today.
- How do you spell Kasie?
- Kasie is one of 3 recorded spellings. Kacie is the more common one — 106 births in 2025 against 9 for Kasie.
- How popular is the name Kasie in 2025?
- Kasie ranks #10107 among US girl names in 2025, with 9 babies given the name.
- How rare is the name Kasie?
- About 1 in every 178,585 US girls born in 2025 was named Kasie — 9 in all.
- Will my child share the name Kasie with classmates?
- Kasie will almost certainly be the only one in school.
Ranked beside Kasie
Names sitting at a similar level of popularity right now.
Berta#10107 · Jettie#10107 · Maye#10107 · Osa#10107 · Fidelia#10107 · Alysa#10107 · Su#10107 · Willie#10107
Looking for what else is popular rather than what resembles Kasie? See the current top 100.
Choosing between Kasie and another name?
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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