Jason vs. Justin: which name is older?
The average Jason is 42 and the average Justin is 34, so Jason is the older name, by about 7 years.
Jason
Justin
When was each name popular?
Jason peaked first, in 1977 (in the late 1970s). Justin peaked in 1988, 11 years later.
Which name is more common?
There are about 980,000 Jasons and about 750,000 Justins alive in the US, so there are about 30% more Jasons than Justins.
Boys or girls?
Both are boys' names: over 99% of living Jasons and over 99% of living Justins are men.
Names the same age as Jason
Names the same age as Justin
More comparisons: Mason vs. Jason · Jason vs. Jayson
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Jason or Justin: questions
Which is older, Jason or Justin?
The average Jason is 42 and the average Justin is 34, so Jason is the older name, by about 7 years.
How old is the average Jason?
The average Jason in the US is 42; half of all living Jasons are between 37 and 51.
How old is the average Justin?
The average Justin in the US is 34; half of all living Justins are between 27 and 43.
Which is more common, Jason or Justin?
There are about 980,000 Jasons and about 750,000 Justins alive in the US, so there are about 30% more Jasons than Justins.
Estimates from Social Security Administration baby-name records (births 1880–2025) and SSA cohort life tables (2026 Trustees Report). How we calculate this