Kailynn
Feminine · “lake”
Kailynn is overwhelmingly a girls’ name — 4,732 girls against 15 boys since 1880.
Kailynn joins a Kai- front to the -lynn ending, and the Lynn behind it is the Welsh llyn — a lake.
How old is the name Kailynn?
Kailynn first appears in US birth records in 1985 — 40 years ago. The typical Kailynn alive today was born around 2011, making them about 14 years old. About 4,700 people named Kailynn are estimated to be alive in the US today.
When was the name Kailynn most popular?
Kailynn peaked in 2011, reaching #898 nationally. Today it ranks #2326, 1,428 places below that high. See the whole 2011 chart.
Lists built from the same records:
Where it comes from
From llyn to Kailynn
Our story of Kailynn
Our story of Kailynn is a story of two water words that may not both be there. Lynn is a Welsh lake and gives the ending; kai is the Hawaiian sea and might be the front, or the front might simply be the sound of Kay and Kaylee. American families built Kailynn, Kaylynn, Kaelynn and Kaylin from the same materials in the 2000s. One half has three thousand years behind it; the other has twenty.
Meaningscholars disagree
lake
The -lynn ending descends from Lynn, from the Welsh llyn, 'lake', which is settled. The Kai- front is a modern American sound, perhaps from Kay or the Hawaiian kai, 'sea'. The compound is recent and only the second half has a documented origin.
How the name formed
- llyn
- Lynn
- Kailynn
Related forms: Kaylynn · Kaelynn · Kailyn
Pronouncing Kailynn
KAY-lin
Two syllables, stress on the first. All the spellings of the sound are said identically.
Nicknames for Kailynn
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
- 1985
- Most girls named
- 2011290 — the highest on record
- Peak rank
- #898reached in 2011
- Change vs 2024
- −17.9%78 in 2025, from 95
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.
Kailynn in other languages
The same name elsewhere
- Kaylynn in English — spelling variant
- Kaelynn in English — spelling variant
- Kailyn in English — spelling variant
Strongest US states over the last decade: Texas, Florida, Georgia.
Kailynns among us
people named Kailynn are estimated to be alive in the US today
About 1 girl in 20,606 born in 2025 was named Kailynn
Estimated from SSA birth records and published actuarial life tables. Method
Spellings of Kailynn
- #2326
- Kailynn on the 2025 chart
- #447
- counting every spelling
The SSA counts spellings, not names. Kailynn went to 78 girls in 2025, but Kaylynn, Kaylin and Kailyn and the rest below are the same name said out loud. Together the 12 spellings went to 616, which makes it the 447th most-given girls’ name of the year — 1,879 places above the chart.
and 4 rarer spellings.
About 1 girl in 2,609 born in 2025 was given one of these spellings — against 1 in 20,606 for Kailynn 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 Ilah test
Every popular name lives one long story — a climb, a peak, a slow settling back. Kailynn's later chapters haven't been written yet, so we borrowed them: Ilah climbed just as high around 1907, and its whole arc is on record. Line the two peaks up, and Ilah's path sketches the road Kailynn is walking now.
Kailynn 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
Where Kailynn is headed
Kailynn should hold steady through 2030 — the curve is flat, and flat curves are the most predictable kind.
High 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.
Kailynn beside its neighbors
The names ranked closest to Kailynn in 2025, in babies rather than position — the bars are to scale.
US girls given each name in 2025.
The trade-off
- Kai and Lynn are two short forms, both with real records.
- The lake meaning is genuine for the ending.
- Two clean syllables with no pronunciation risk.
- At least six spellings of the sound are in circulation.
- Only the second half has a documented origin.
- It will be respelled by other people constantly.
Nobody names a baby alone.
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What they receive
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Kailynn
Feminine · #2326 in the U.S.
Frequently asked
- How many Kailynns are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 4,700 people named Kailynn are estimated to be alive in the US today.
- How do you spell Kailynn?
- Kailynn is one of 8 recorded spellings. Kaylynn is the more common one — 134 births in 2025 against 78 for Kailynn.
- How popular is the name Kailynn in 2025?
- Kailynn ranks #2326 among US girl names in 2025, with 78 babies given the name.
- How rare is the name Kailynn?
- About 1 in every 20,606 US girls born in 2025 was named Kailynn — 78 in all.
- Will my child share the name Kailynn with classmates?
- Kailynn will almost certainly be the only one in school.
Ranked beside Kailynn
Names sitting at a similar level of popularity right now.
Ria#2326 · Malaika#2326 · Delta#2326 · Caitlin#2326 · Tommie#2326 · Azalia#2326 · Audrina#2326 · Sitara#2326
Looking for what else is popular rather than what resembles Kailynn? See the current top 100.
Choosing between Kailynn and another name?
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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