Mason vs. Jason: which name is older?
The average Mason is 16 and the average Jason is 42, so Jason is the older name, by about 26 years.
Mason
Jason
When was each name popular?
Jason peaked first, in 1977 (in the late 1970s). Mason peaked in 2011, 34 years later.
Which name is more common?
There are about 340,000 Masons and about 980,000 Jasons alive in the US, so there are about 3 times as many Jasons as Masons.
Boys or girls?
Both are boys' names: 99% of living Masons and over 99% of living Jasons are men.
Names the same age as Mason
Names the same age as Jason
More comparisons: Jason vs. Justin · Jason vs. Jayson
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Mason or Jason: questions
Which is older, Mason or Jason?
The average Mason is 16 and the average Jason is 42, so Jason is the older name, by about 26 years.
How old is the average Mason?
The average Mason in the US is 16; half of all living Masons are between 9 and 21.
How old is the average Jason?
The average Jason in the US is 42; half of all living Jasons are between 37 and 51.
Which is more common, Mason or Jason?
There are about 340,000 Masons and about 980,000 Jasons alive in the US, so there are about 3 times as many Jasons as Masons.
Estimates from Social Security Administration baby-name records (births 1880–2025) and SSA cohort life tables (2026 Trustees Report). How we calculate this