How old is someone named Jax?
The average Jax is 10 years old.
Half of all living Jaxes are between 6 and 13.
When was Jax popular?
Jax is a modern favorite: it climbed through the 2000s and hit its high in 2015. 974 babies got the name in 2025.
Popular names of 2015 · The most popular names of the 2010s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1990s | 249 | 240 |
| 2000s | 2,169 | 2,100 |
| 2010s | 15,454 | 15,000 |
| 2020s | 7,437 | 7,400 |
How many Jaxes are still alive?
About 25,000 Jaxes are alive in the US today. That's over 99% of the roughly 25,000 babies named Jax since 1995.
Nearly every Jax ever born is still alive, because almost all of them are young.
What generation is the name Jax?
About four in five living Jaxes are in Gen Alpha, born in 2013 or later.
Is Jax an old name?
No. Jax is one of the youngest names around: younger than 95 in 100 names on AgeByName.
Looking ahead: if babies keep getting the name at today's pace, the typical Jax will be 26 in 2056, so the name is getting older.
Is Jax a boy or girl name?
Almost entirely boys: 99.1% of living Jaxes are men.
Names the same age as Jax
NAME TWIN
Jax's name twin is Adelynn. Of all 3,713 names on AgeByName, Adelynn's age curve is the closest match to Jax's: 96% alike.
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Questions about the name Jax
How old is the average Jax?
The average Jax in the US is 10 years old. The median is 10, so half are older and half younger.
How many people are named Jax?
About 25,000 Jaxes are alive in the US today, out of roughly 25,000 babies given the name since 1995.
When was the name Jax most popular?
In 2015, when about 1,900 baby boys were named Jax.
Is Jax a Gen Alpha name?
Yes. About 79% of living Jaxes 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