How old is someone named Kayleigh?
The average Kayleigh is 20 years old.
Half of all living Kayleighs are between 13 and 27.
When was Kayleigh popular?
Kayleigh was a boom name: it shot up, peaked in 2009, and dropped away. That's why most Kayleighs are close to the same age.
Popular names of 2009 · The most popular names of the 2000s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1980s | 2,677 | 2,600 |
| 1990s | 6,634 | 6,500 |
| 2000s | 11,777 | 12,000 |
| 2010s | 10,235 | 10,000 |
| 2020s | 3,245 | 3,200 |
How many Kayleighs are still alive?
About 34,000 Kayleighs are alive in the US today. That's 99% of the roughly 35,000 babies named Kayleigh since 1984.
Nearly every Kayleigh ever born is still alive, because almost all of them are young.
What generation is the name Kayleigh?
About half of living Kayleighs are in Gen Z, born between 1997 and 2012.
- Millennial 20%
- Gen Z 52%
- Gen Alpha 28%
Is Kayleigh an old name?
Not really. Kayleigh is younger than 70 in 100 names on AgeByName.
Looking ahead: if babies keep getting the name at today's pace, the typical Kayleigh will be 41 in 2056, so the name is getting older.
Is Kayleigh a boy or girl name?
Almost entirely girls: over 99.9% of living Kayleighs are women.
Names the same age as Kayleigh
NAME TWIN
Kayleigh's name twin is Chase. Of all 3,713 names on AgeByName, Chase's age curve is the closest match to Kayleigh's: 92% alike.
Other spellings: Kailey (21) · Kaylie (21) · Kaleigh (24) · Kaley (26) · Kayley (23) · Kayli (23)
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Questions about the name Kayleigh
How old is the average Kayleigh?
The average Kayleigh in the US is 20 years old. The median is 19, so half are older and half younger.
How many people are named Kayleigh?
About 34,000 Kayleighs are alive in the US today, out of roughly 35,000 babies given the name since 1984.
When was the name Kayleigh most popular?
In 2009, when about 1,500 baby girls were named Kayleigh.
Is Kayleigh a Gen Z name?
Yes. About 52% of living Kayleighs are in Gen Z, born between 1997 and 2012.
Estimates from Social Security Administration baby-name records (births 1880–2025) and SSA cohort life tables (2026 Trustees Report). Updated each spring. How we calculate this