How old is someone named Kailyn?
The average Kailyn is 19 years old.
Half of all living Kailyns are between 13 and 25.
When was Kailyn popular?
Kailyn was a boom name: it shot up, peaked in 2011, and dropped away. That's why most Kailyns are close to the same age.
Popular names of 2011 · The most popular names of the 2010s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1980s | 349 | 340 |
| 1990s | 2,429 | 2,400 |
| 2000s | 5,609 | 5,600 |
| 2010s | 4,980 | 4,900 |
| 2020s | 984 | 980 |
How many Kailyns are still alive?
About 14,000 Kailyns are alive in the US today. That's 99% of the roughly 14,000 babies named Kailyn since 1981.
Nearly every Kailyn ever born is still alive, because almost all of them are young.
What generation is the name Kailyn?
More than half of living Kailyns are in Gen Z, born between 1997 and 2012.
- Millennial 12%
- Gen Z 61%
- Gen Alpha 27%
Is Kailyn an old name?
Not really. Kailyn is younger than 73 in 100 names on AgeByName.
Looking ahead: if babies keep getting the name at today's pace, the typical Kailyn will be 41 in 2056, so the name is getting older.
Is Kailyn a boy or girl name?
Almost entirely girls: 99% of living Kailyns are women.
Names the same age as Kailyn
NAME TWIN
Kailyn's name twin is Ashlynn. Of all 3,713 names on AgeByName, Ashlynn's age curve is the closest match to Kailyn's: 95% alike.
Other spellings: Kaylin (21) · Kaelyn (19) · Kaylynn (20) · Kaylyn (25) · Kalyn (28) · Cailyn (19)
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Questions about the name Kailyn
How old is the average Kailyn?
The average Kailyn in the US is 19 years old. The median is 18, so half are older and half younger.
How many people are named Kailyn?
About 14,000 Kailyns are alive in the US today, out of roughly 14,000 babies given the name since 1981.
When was the name Kailyn most popular?
In 2011, when about 800 baby girls were named Kailyn.
Is Kailyn a Gen Z name?
Yes. About 61% of living Kailyns 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