Kadyn
Masculine
Kadyn is given to both — 3,298 boys and 1,434 girls since 1880. See Kadyn as a girl nameSee other names given to both
Kadyn belongs to the largest rhyming family in modern American naming. Aiden opened it, and Jayden, Braden, Hayden, Kaden and a hundred spellings between them followed — a set of names that share an ending and almost nothing else. The one at the head of the family is genuinely Irish. Most of the rest, including this one, are built on the sound.
How old is the name Kadyn?
Kadyn first appears in US birth records in 1994 — 31 years ago. The typical Kadyn alive today was born around 2010, making them about 15 years old. About 3,300 people named Kadyn are estimated to be alive in the US today.
When was the name Kadyn most popular?
Kadyn peaked in 2009, reaching #833 nationally. Today it ranks #2991, 2,158 places below that high. See the whole 2009 chart.
Lists built from the same records:
Where it comes from
Origin, sound and short forms
The story of Kadyn
Aidan came out of early Irish Christianity — a monk from Iona who founded Lindisfarne carried it — and it stayed a specifically Irish name for a very long time. When it entered general American use it did something no one expected: the ending detached. Once -aden and -ayden were available as endings, they combined with almost every consonant in the language, and the resulting names arrived faster than any dictionary could record them. Caden was among the first, and it produced Kaden, Kaeden, Cayden and Kadyn in short order. The y in this spelling is doing the same work y has done throughout that stretch of American naming: marking a family's version as its own.
Meaningnot established
Not established
Aodh was an Old Irish name meaning fire, and it belonged to a god before it belonged to men; Aodhán is its diminutive, and Aidan is the English spelling. That much is solid. Caden is a different matter. It may come from an Irish surname, Mac Cadáin, and it may simply have been made on the Aiden pattern, and there is no way to choose between those. Kadyn is a respelling of Caden, so it inherits the uncertainty rather than resolving it. The honest answer is that this name's meaning is not established.
Pronouncing Kadyn
KAY-din
KAY-din, two syllables, stress at the front, the second vowel reduced almost to nothing. Every spelling in this family is said the same way, which is the whole difficulty: the sound tells a listener nothing about which of a dozen spellings is on the certificate.
Nicknames for Kadyn
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
- 1994
- Most boys named
- 2009260 — the highest on record
- Peak rank
- #833reached in 2009
- Change vs 2024
- −32.8%41 in 2025, from 61
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.
Kadyn in other languages
The same name elsewhere
- Aodhán in Irish — related form
- Aodh in Irish — related form
Strongest US states over the last decade: Texas, California, Pennsylvania.
Kadyns among us
people named Kadyn are estimated to be alive in the US today
About 1 boy in 41,660 born in 2025 was named Kadyn
Estimated from SSA birth records and published actuarial life tables. Method
Spellings of Kadyn
- #2991
- Kadyn on the 2025 chart
- #841
- counting every spelling
The SSA counts spellings, not names. Kadyn went to 41 boys in 2025, but Kadin, Cadyn and Cadin are the same name said out loud. Together the 4 spellings went to 87, which makes it the 841st most-given boys’ name of the year — 2,150 places above the chart.
About 1 boy in 19,633 born in 2025 was given one of these spellings — against 1 in 41,660 for Kadyn 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 Shay test
Every popular name lives one long story — a climb, a peak, a slow settling back. Kadyn's later chapters haven't been written yet, so we borrowed them: Shay climbed just as high around 1991, and its whole arc is on record. Line the two peaks up, and Shay's path sketches the road Kadyn is walking now.
Kadyn 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 Kadyn is headed
Kadyn should hold steady through 2030 — the curve is flat, and flat curves are the most predictable kind.
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.
Kadyn beside its neighbors
The names ranked closest to Kadyn in 2025, in babies rather than position — the bars are to scale.
US boys given each name in 2025.
The trade-off
- The sound is entirely familiar to anyone who has been near an American classroom, so it is never mispronounced.
- Kade works as a short form and is a complete name in its own right.
- It goes mostly to boys but a real minority to girls, so it does not close a door in advance.
- There are at least ten spellings of this sound in current use, and none is standard, so the name will be written wrong by default rather than by carelessness.
- The rhyme family dates the name to one narrow stretch of American naming as clearly as a birth year would.
- The meaning is genuinely not established, and a family who wants one will be choosing rather than finding.
Nobody names a baby alone.
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Kadyn
Masculine · #2991 in the U.S.
Frequently asked
- How many Kadyns are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 3,300 people named Kadyn are estimated to be alive in the US today.
- How do you spell Kadyn?
- Kadyn is the most-used spelling in US records — 41 of the 87 babies given the name in 2025. The others recorded are Kadin, Cadyn and Cadin.
- How popular is the name Kadyn in 2025?
- Kadyn ranks #2991 among US boy names in 2025, with 41 babies given the name.
- How rare is the name Kadyn?
- About 1 in every 41,660 US boys born in 2025 was named Kadyn — 41 in all.
- Will my child share the name Kadyn with classmates?
- Kadyn will almost certainly be the only one in school.
Ranked beside Kadyn
Names sitting at a similar level of popularity right now.
Roran#2991 · Izaak#2991 · Nyle#2991 · Levin#2991 · Tilden#2991 · Hanson#2991 · Breck#2991 · Oswaldo#2991
Looking for what else is popular rather than what resembles Kadyn? See the current top 100.
Choosing between Kadyn and another name?
See them side by side — full stats, history and a gentle verdict.
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Which one would you pick?
Your gut first, the numbers after — the split shows once you pick.
US figures from the Social Security Administration. 1880–2025. Data & methodology
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