How old is someone named Kayley?
The average Kayley is 23 years old.
Half of all living Kayleys are between 17 and 28.
When was Kayley popular?
Kayley had one big moment, peaking in 1999. 62% of the babies ever named Kayley arrived in a single 15-year stretch.
Popular names of 1999 · The most popular names of the 1990s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1970s | 5 | under 100 |
| 1980s | 476 | 460 |
| 1990s | 2,559 | 2,500 |
| 2000s | 3,679 | 3,600 |
| 2010s | 1,503 | 1,500 |
| 2020s | 364 | 360 |
How many Kayleys are still alive?
About 8,500 Kayleys are alive in the US today. That's 99% of the roughly 8,600 babies named Kayley since 1977.
Nearly every Kayley ever born is still alive, because almost all of them are young.
What generation is the name Kayley?
About two in three living Kayleys are in Gen Z, born between 1997 and 2012.
- Millennial 22%
- Gen Z 64%
- Gen Alpha 14%
Is Kayley an old name?
Not really. Kayley is younger than 64 in 100 names on AgeByName.
Is Kayley a boy or girl name?
Almost entirely girls: over 99.9% of living Kayleys are women.
Names the same age as Kayley
NAME TWIN
Kayley's name twin is Kaylah. Of all 3,713 names on AgeByName, Kaylah's age curve is the closest match to Kayley's: 93% alike.
Other spellings: Kayleigh (20) · Kailey (21) · Kaylie (21) · Kaleigh (24) · Kaley (26) · Kayli (23)
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Questions about the name Kayley
How old is the average Kayley?
The average Kayley in the US is 23 years old. The median is 23, so half are older and half younger.
How many people are named Kayley?
About 8,500 Kayleys are alive in the US today, out of roughly 8,600 babies given the name since 1977.
When was the name Kayley most popular?
In 1999, when about 460 baby girls were named Kayley.
Is Kayley a Gen Z name?
Yes. About 64% of living Kayleys 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