How old is someone named Kayleen?
The average Kayleen is 27 years old.
Half of all living Kayleens are between 14 and 35.
When was Kayleen popular?
Kayleen is a steady name: popular for generations, with a peak in 2010 but no single era. You'll meet Kayleens of every age.
Popular names of 2010 · The most popular names of the 2010s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1930s | 32 | under 100 |
| 1940s | 212 | 120 |
| 1950s | 384 | 300 |
| 1960s | 461 | 410 |
| 1970s | 280 | 260 |
| 1980s | 681 | 660 |
| 1990s | 1,360 | 1,300 |
| 2000s | 1,966 | 1,900 |
| 2010s | 1,948 | 1,900 |
| 2020s | 671 | 670 |
How many Kayleens are still alive?
About 7,600 Kayleens are alive in the US today. That's 96% of the roughly 8,000 babies named Kayleen since 1934.
Nearly every Kayleen ever born is still alive, because almost all of them are young.
What generation is the name Kayleen?
About two in five living Kayleens are in Gen Z, born between 1997 and 2012.
Is Kayleen an old name?
Not really. Kayleen is younger than 54 in 100 names on AgeByName.
Looking ahead: if babies keep getting the name at today's pace, the typical Kayleen will be 41 in 2056, so the name is aging slowly.
Is Kayleen a boy or girl name?
Almost entirely girls: over 99.9% of living Kayleens are women.
Names the same age as Kayleen
NAME TWIN
Kayleen's name twin is Preston. Of all 3,713 names on AgeByName, Preston's age curve is the closest match to Kayleen's: 92% alike.
Other spellings: Kaylen (19)
Think you can guess a Gary's age?
Ten names, one slider each. Share your score.
Questions about the name Kayleen
How old is the average Kayleen?
The average Kayleen in the US is 27 years old. The median is 22, so half are older and half younger.
How many people are named Kayleen?
About 7,600 Kayleens are alive in the US today, out of roughly 8,000 babies given the name since 1934.
When was the name Kayleen most popular?
In 2010, when about 280 baby girls were named Kayleen.
Is Kayleen a Gen Z name?
Partly. Gen Z are the largest group, about 41% of living Kayleens, but the name spans several generations.
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