How old is someone named Onyx?
The average Onyx is 6 years old.
Half of all living Onyxes are between 2 and 8.
When was Onyx popular?
Onyx has been rising for years and peaked in 2023, so most Onyxes are still kids.
Popular names of 2023 · The most popular names of the 2020s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1910s | 5 | 0 |
| 1980s | 13 | under 100 |
| 1990s | 219 | 210 |
| 2000s | 438 | 430 |
| 2010s | 1,918 | 1,900 |
| 2020s | 6,039 | 6,000 |
How many Onyxes are still alive?
About 8,600 Onyxes are alive in the US today. That's over 99% of the roughly 8,600 babies named Onyx since 1918.
Nearly every Onyx ever born is still alive, because almost all of them are young.
What generation is the name Onyx?
About nine in ten living Onyxes are in Gen Alpha, born in 2013 or later.
- Millennial 2%
- Gen Z 9%
- Gen Alpha 89%
Is Onyx an old name?
No. Onyx is one of the youngest names around: younger than 99 in 100 names on AgeByName.
Looking ahead: if babies keep getting the name at today's pace, the typical Onyx will be 20 in 2056, so the name is aging slowly.
Is Onyx a boy or girl name?
Mostly a boy's name: 79% of living Onyxes are men, and 21% are women.
The women average 9 and the men 6.
Names the same age as Onyx
NAME TWIN
Onyx's name twin is Luka. Of all 3,713 names on AgeByName, Luka's age curve is the closest match to Onyx's: 93% alike.
Think you can guess a Linda's age?
Ten names, one slider each. Share your score.
Questions about the name Onyx
How old is the average Onyx?
The average Onyx in the US is 6 years old. The median is 4, so half are older and half younger.
How many people are named Onyx?
About 8,600 Onyxes are alive in the US today, out of roughly 8,600 babies given the name since 1918.
When was the name Onyx most popular?
In 2023, when about 1,300 baby boys were named Onyx.
Is Onyx a Gen Alpha name?
Yes. About 89% of living Onyxes are in Gen Alpha, born in 2013 or later.
Is Onyx a boy or girl name?
Mostly a boy's name: 79% of living Onyxes are men, and 21% are women. The women average 9 and the men 6.
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