How old is someone named Kai?
The average Kai is 12 years old.
Half of all living Kais are between 5 and 17.
When was Kai popular?
Kai has been rising for years and peaked in 2022, so most Kais are still kids.
Popular names of 2022 · The most popular names of the 2020s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1920s | 6 | 0 |
| 1930s | 6 | 0 |
| 1940s | 10 | under 100 |
| 1950s | 181 | 130 |
| 1960s | 443 | 370 |
| 1970s | 1,021 | 940 |
| 1980s | 1,371 | 1,300 |
| 1990s | 3,545 | 3,400 |
| 2000s | 14,393 | 14,000 |
| 2010s | 29,004 | 29,000 |
| 2020s | 28,730 | 29,000 |
How many Kais are still alive?
About 78,000 Kais are alive in the US today. That's 99% of the roughly 79,000 babies named Kai since 1926.
Nearly every Kai ever born is still alive, because almost all of them are young.
What generation is the name Kai?
About two in three living Kais are in Gen Alpha, born in 2013 or later.
- Gen X 2%
- Millennial 4%
- Gen Z 28%
- Gen Alpha 66%
Is Kai an old name?
No. Kai is one of the youngest names around: younger than 90 in 100 names on AgeByName.
Looking ahead: if babies keep getting the name at today's pace, the typical Kai will be 25 in 2056, so the name is aging slowly.
Is Kai a boy or girl name?
Mostly a boy's name: 89% of living Kais are men, and 11% are women.
The women average 18 and the men 12.
Names the same age as Kai
NAME TWIN
Kai's name twin is Scout. Of all 3,713 names on AgeByName, Scout's age curve is the closest match to Kai's: 94% alike.
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Questions about the name Kai
How old is the average Kai?
The average Kai in the US is 12 years old. The median is 9, so half are older and half younger.
How many people are named Kai?
About 78,000 Kais are alive in the US today, out of roughly 79,000 babies given the name since 1926.
When was the name Kai most popular?
In 2022, when about 5,700 baby boys were named Kai.
Is Kai a Gen Alpha name?
Yes. About 66% of living Kais are in Gen Alpha, born in 2013 or later.
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