Head to head · Girls' names
Kaia vs Kylie
#193 vs #204 in 2025
Kaia is a whisker ahead (#193 vs #204 in 2025), but the curves point different ways: Kaia is climbing the charts fast, Kylie is stepping back from its peak.
Cast your vote
Which one would you pick?
Your gut first, the numbers after — the split shows once you pick.
The tale of the tape
On the charts, Kaia leads 4 measures of 6; Kylie leads 2.
Ranks, counts and years are measured in the official US birth record; the classroom and living figures are estimates computed from it. The dot marks the side each measure favours on the charts — more common, not better.
What the records say
146 years of US births, drawn on one scale
Two curves, one scale
Who owned which decade
- 1950s: Kaia #5124, Kylie — — Kaia higher
- 1960s: Kaia #5387, Kylie #5805 — Kaia higher
- 1970s: Kaia #4043, Kylie #2146 — Kylie higher
- 1980s: Kaia #3950, Kylie #516 — Kylie higher
- 1990s: Kaia #2519, Kylie #150 — Kylie higher
- 2000s: Kaia #697, Kylie #66 — Kylie higher
- 2010s: Kaia #463, Kylie #82 — Kylie higher
- 2020s: Kaia #219, Kylie #182 — Kylie higher
Kylie stood higher in 6 of 8 decades; Kylie has held the lead since the 1970s.
Rank by decade
| Decade | Kaia | Kylie |
|---|---|---|
| 1950s | #5124 | — |
| 1960s | #5387 | #5805 |
| 1970s | #4043 | #2146 |
| 1980s | #3950 | #516 |
| 1990s | #2519 | #150 |
| 2000s | #697 | #66 |
| 2010s | #463 | #82 |
| 2020s | #219 | #182 |
Average national rank across each decade. A dash means the name sat outside the recorded top of that decade.
Around the world
Kaia
- Canada#98
Kylie
Not charting outside the US.
National statistics offices, latest published year.
The names themselves
Meaning, roots, sound and the people who carried each
Where each name comes from
Kaia
Two readings compete: a Scandinavian short form of Katarina, or a feminine take on kai, 'sea'
The oldest documented road is Kaja/Kaia as the Nordic pet form of Katharina — which makes its ultimate meaning as unsettled as Katherine's own, traditionally glossed 'pure' through the Greek katharos. Many American parents instead read it alongside kai, 'sea' in Hawaiian and Japanese. Separately, Kaja is an Estonian name and an Estonian word for 'echo'. All three are real; none has ownership of the spelling Kaia.
Aikaterine → Katharina → Kaja → Kaia
How it traveled
The line begins with Greek Aikaterine, which traveled north through Latin Katharina and was worn down in Norwegian and Danish speech to Kaja — pronounced with a soft y, and spelled Kaia by families who wanted the sound written out. It stayed largely a Nordic and Estonian name until the late twentieth century, when English-speaking parents took to short vowel-rich names and the Kai- cluster in particular.
Kylie
Two competing readings: a boomerang, or a feminine form of Kyle
Australian English has the word kylie (also spelled kiley), a type of flat throwing stick or boomerang, taken from Noongar, a language of Western Australia. Whether the given name comes from that word or was simply formed from Kyle — a Scottish surname and place name from Gaelic caol, 'narrow, a strait' — with the -lie ending shared by Kelly and Kayley, has never been settled. Both readings are seriously held.
How it traveled
The name belongs first to Australia, where it came into common use in the second half of the twentieth century, well before American parents knew it. Its rise there put it in the path of a young Melbourne actress and singer whose recording career took off in the late 1980s and made the spelling recognizable across the English-speaking world.
Where a reading is contested the note says so — this page does not turn a guess into a fact. The chain is each name's recorded forms, oldest first; the story is its opening, told in full on the name's own page.
Out loud, and in short
Kaia
KY-uh
Two syllables, rhyming with the first part of 'kayak' only if you say it KY-ak. A minority of American speakers say KAY-uh, and in Norwegian and Estonian the vowel sits closer to KAH-yah. Expect to state your preference once when you introduce her.
- Kai — Informal clip; also a full given name in its own right, used for boys and girls.
- Kay — Informal, and a standalone given name well represented among older generations.
- Kiki — Family-level nickname rather than a public one.
- Katarina — Not a nickname but the longer formal name Kaia historically shortens from, if you want a full option on paper.
Kylie
KY-lee
Stress on the first syllable, which rhymes with 'sky'. English speakers read it correctly on sight; the main risk is not mispronunciation but a follow-up question about which spelling you used.
- Ky — The most common short form, used informally at home and among friends; also stands alone as a given name.
- Kyles — A casual, peer-to-peer form rather than a family one.
- Kye — Same sound as Ky, spelled out; occasionally used as an independent name.
- Lee — Drawn from the second syllable; less common, and a standalone name in its own right.
Who has carried each name
Kaia
Kaia Gerber (b. 2001) — Model and actress, daughter of Cindy Crawford
Kylie
Kylie Minogue (b. 1968) — Australia's pop icon ("Can't Get You Out of My Head")
Kylie Jenner (b. 1997) — Beauty mogul and reality-TV star
Source: Wikidata — the one source on this page that is not an official agency.
Is it right for you
The differences that decide it, laid out by what you want
Choose by what you want
Choose Kaia if you want…
- a name most people already know#193 in 2025, 1,618 babies that year
- a name on the way upup 107 places on the charts in five years
- a name that charts abroad tooKaia is on the national lists of Canada
- a name that ages quietlyan estimated 54% chance of feeling dated by 2040, against 75% for Kylie
Choose Kylie if you want…
- a name fewer children share#204 in 2025 — kylie will almost certainly be the only one in school
- a name past its most crowded yearsKylie is stepping back from its peak
- a name that feels very nowKylie is stepping back from its peak
Each line is a measured difference between the two names — a rank, a count, a recorded form — never a judgement of either. Save the one that answers your question; it lands on your shortlist.
The trade-offs, name by name
Kaia
Strengths
- Short, two syllables, no silent letters — most people can say it after hearing it once.
- Established short forms already in circulation: Kai and Kay both stand alone as names.
- A real Nordic and Estonian name, so it works without translation across Scandinavia and in Canada as well as the US.
To consider
- The spelling competes with Kaya, Kaiya, Kaja and Kaja/Kaja variants, and all of them sound similar. She will likely spell it aloud fairly often.
- KY-uh and KAY-uh both circulate in the US, so first-day-of-school corrections are part of the deal.
- The name is on a steady upward path and clusters with Kai, Maya and Mia, so it may feel less rare over the years than it does now — familiar company rather than a crowd.
Kylie
Strengths
- Reads aloud correctly the first time for English speakers — no silent letters, no stress ambiguity.
- Short and complete on its own, while still offering Ky and Kyles for informal use.
- Recognized across the English-speaking world, with an unbroken record in Australia, Britain and the US.
To consider
- Kylee, Kyleigh and Kiley all sound identical, so she will spend her life confirming the spelling — usually with a quick 'with an i-e at the end'.
- The two best-known bearers are both very public figures in music and beauty, and the name carries their echo. That fades with distance, but for now people often mention one of them.
- Its American use clusters within a fairly narrow band of birth years, so it reads as belonging to a particular stretch of decades rather than as a name from everywhere and always.
Documented properties of each name — how it spells, travels and shortens — not opinions about the child.
How each is likely to age
Kaia
54%chance Kaia feels dated by 2040
Kaia is climbing fast right now. Steep climbs tend to come with steep descents — the quicker a name arrives, the more firmly it belongs to its moment.
Kylie
75%chance Kylie feels dated by 2040
Kylie is coming down from a big peak (#49 in 2004). This is the stretch of the cycle where a name starts to sound like the decade it ruled.
A reading of where each name sits on the long naming cycle — computed, not measured, and explained on the data page.
With your last name
Say both in full. The notes are facts about letters and sound — a rhyme, a shared initial, the monogram — not a verdict on either name.
Type a last name to hear Kaia and Kylie in full.
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Decide together
Nobody names a baby alone
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More head-to-heads
Same measures, different pair. Sixty more are dealt daily in the arena.
Lists these names appear on
- Short and sweet: names of four letters or fewer
- The names with the most spellings
- Hawaiian names full of ocean light
- Celebrity baby names that caught on
- all guides
Where Kaia and Kylie each sit in the library — alternatives in the same style, ranked by the same records.
Kaia or Kylie — the short answers
- Which is more popular, Kaia or Kylie?
- Kaia, in 2025: Kaia ranked #193 with 1,618 babies; Kylie ranked #204 with 1,491 babies.
- Which name is rising faster, Kaia or Kylie?
- Kaia. Over the last five years Kaia moved up 107 places; Kylie moved down 72 places.
- Which is the older name, Kaia or Kylie?
- Kaia entered the US charts in 1955; Kylie entered the US charts in 1960. On the American record, Kaia is the older name.
- How many people are named Kaia and Kylie?
- About 21,000 people named Kaia are estimated to be alive in the US today. About 121,000 people named Kylie are estimated to be alive in the US today.
- Will there be other Kaias or Kylies in the classroom?
- Kaia will almost certainly be the only one in school. Kylie will almost certainly be the only one in school.
US figures from the Social Security Administration, 1880–2025; international figures from national statistics agencies. Votes are battle voters on this site, not the birth record. Data & methodology
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