How old is someone named Izaiah?
The average Izaiah is 14 years old.
Half of all living Izaiahs are between 8 and 19.
When was Izaiah popular?
Izaiah has been rising for years and peaked in 2009, so most Izaiahs are still kids.
Popular names of 2009 · The most popular names of the 2000s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1980s | 27 | under 100 |
| 1990s | 715 | 700 |
| 2000s | 5,047 | 5,000 |
| 2010s | 6,051 | 6,000 |
| 2020s | 3,069 | 3,000 |
How many Izaiahs are still alive?
About 15,000 Izaiahs are alive in the US today. That's 99% of the roughly 15,000 babies named Izaiah since 1984.
Nearly every Izaiah ever born is still alive, because almost all of them are young.
What generation is the name Izaiah?
About half of living Izaiahs are in Gen Z, born between 1997 and 2012.
- Millennial 2%
- Gen Z 52%
- Gen Alpha 47%
Is Izaiah an old name?
No. Izaiah is one of the youngest names around: younger than 85 in 100 names on AgeByName.
Looking ahead: if babies keep getting the name at today's pace, the typical Izaiah will be 30 in 2056, so the name is getting older.
Is Izaiah a boy or girl name?
Almost entirely boys: 99.9% of living Izaiahs are men.
Names the same age as Izaiah
NAME TWIN
Izaiah's name twin is Rylee. Of all 3,713 names on AgeByName, Rylee's age curve is the closest match to Izaiah's: 95% alike.
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Questions about the name Izaiah
How old is the average Izaiah?
The average Izaiah in the US is 14 years old. The median is 14, so half are older and half younger.
How many people are named Izaiah?
About 15,000 Izaiahs are alive in the US today, out of roughly 15,000 babies given the name since 1984.
When was the name Izaiah most popular?
In 2009, when about 740 baby boys were named Izaiah.
Is Izaiah a Gen Z name?
Yes. About 52% of living Izaiahs 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