Keelyn
Feminine · “Irish caol”
Keelyn is given to both — 865 girls and 297 boys since 1880. See other names given to both
A modern coinage peaks within about five years of first appearing. An inherited name takes twenty or thirty to climb, which means the shape of a curve tells you what kind of name you are looking at before you know anything else about it.
How old is the name Keelyn?
Keelyn first appears in US birth records in 1973 — 52 years ago. The typical Keelyn alive today was born around 2009, making them about 16 years old. About 900 people named Keelyn are estimated to be alive in the US today.
When was the name Keelyn most popular?
Keelyn peaked in 2010, reaching #2589 nationally. Today it ranks #10917, 8,328 places below that high. See the whole 2010 chart.
Lists built from the same records:
Where it comes from
From caol to Keelyn
Our story of Keelyn
The two kinds of name behave differently in the data and the difference is measurable. A name with a long history rises slowly, because it spreads through families, godparents and namesakes, and it takes a generation to reach its peak; it then declines just as slowly. A coinage has no such transmission: it spreads by imitation of a sound, reaches its ceiling in three to six years and falls at the same rate, which produces a narrow spike rather than a hill. Keelyn has the spike, appearing and peaking within a few years in the late 2000s. That shape is why a curve can date a birth certificate so precisely, and why the names at the bottom of the modern list turn over far faster than the names at the top.
Meaningscholars disagree
Irish caol, slender
Keelyn joins Keely, from the Irish surname O Caolaidhe containing caol, slender, to the -lyn ending. The compound is a modern American formation; the peak is 2010.
How the name formed
- caol
- Keely
- Keelyn
Related forms: Keelin · Caoilfhionn
Pronouncing Keelyn
KEE-lin
Two syllables, stress on the first. Keelyn and Keelin are homophones.
Nicknames for Keelyn
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
- 1973
- Most girls named
- 201070 — the highest on record
- Peak rank
- #2589reached in 2010
- Change vs 2024
- −11.1%8 in 2025, 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.
Keelyn in other languages
The same name elsewhere
- Keelin in English — spelling variant
- Caoilfhionn in Irish — related form
Keelyns among us
people named Keelyn are estimated to be alive in the US today
About 1 girl in 200,908 born in 2025 was named Keelyn
Estimated from SSA birth records and published actuarial life tables. Method
Spellings of Keelyn
- #10917
- Keelyn on the 2025 chart
- #944
- counting every spelling
The SSA counts spellings, not names. Keelyn went to 8 girls in 2025, but Kellyn is the same name said out loud. Together the 2 spellings went to 16, which makes it the 944th most-given girls’ name of the year — 9,973 places above the chart.
- Keelyn8
- Kellyn8
About 1 girl in 100,454 born in 2025 was given one of these spellings — against 1 in 200,908 for Keelyn 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 Druscilla test
Every popular name lives one long story — a climb, a peak, a slow settling back. Keelyn's later chapters haven't been written yet, so we borrowed them: Druscilla climbed just as high around 1948, and its whole arc is on record. Line the two peaks up, and Druscilla's path sketches the road Keelyn is walking now.
Keelyn 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
Keelyn beside its neighbors
The names ranked closest to Keelyn in 2025, in babies rather than position — the bars are to scale.
US girls given each name in 2025.
The trade-off
- Keely and Lyn are two complete names inside one.
- Two syllables with a firm opening.
- The Irish root is genuine and documented.
- Several spellings compete and none is standard.
- The -lyn ending dates it to the last two decades.
- The 2010 peak dates it closely.
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What they receive
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Keelyn
Feminine · #10917 in the U.S.
Frequently asked
- How many Keelyns are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 900 people named Keelyn are estimated to be alive in the US today.
- How do you spell Keelyn?
- Keelyn is the most-used spelling in US records — 8 of the 16 babies given the name in 2025. The others recorded are Kellyn.
- How popular is the name Keelyn in 2025?
- Keelyn ranks #10917 among US girl names in 2025, with 8 babies given the name.
- How rare is the name Keelyn?
- About 1 in every 200,908 US girls born in 2025 was named Keelyn — 8 in all.
- Will my child share the name Keelyn with classmates?
- Keelyn will almost certainly be the only one in school.
Ranked beside Keelyn
Names sitting at a similar level of popularity right now.
Edythe#10917 · Tessie#10917 · Drusilla#10917 · Eugenie#10917 · Ivah#10917 · Karri#10917 · Claribel#10917 · Myrtle#10917
Looking for what else is popular rather than what resembles Keelyn? See the current top 100.
Choosing between Keelyn and another name?
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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