Alison vs. Allison: which name is older?
The average Alison is 39 and the average Allison is 31, so Alison is the older name, by about 8 years.
Alison and Allison sound alike, so the spelling is the clue: a Alison is more likely to have been born in the mid 1980s, and a Allison in the mid 1990s.
Alison
Allison
When was each name popular?
Alison peaked first, in 1986 (in the mid 1980s). Allison peaked in 1994, 8 years later.
Which name is more common?
There are about 110,000 Alisons and about 310,000 Allisons alive in the US, so there are about 3 times as many Allisons as Alisons.
Boys or girls?
Both are girls' names: over 99% of living Alisons and over 99% of living Allisons are women.
Names the same age as Alison
Names the same age as Allison
More comparisons: Allison vs. Allyson
Think you can guess a Alison's age?
Ten names, one slider each. Share your score.
Alison or Allison: questions
Which is older, Alison or Allison?
The average Alison is 39 and the average Allison is 31, so Alison is the older name, by about 8 years.
How old is the average Alison?
The average Alison in the US is 39; half of all living Alisons are between 27 and 51.
How old is the average Allison?
The average Allison in the US is 31; half of all living Allisons are between 18 and 41.
Which is more common, Alison or Allison?
There are about 110,000 Alisons and about 310,000 Allisons alive in the US, so there are about 3 times as many Allisons as Alisons.
Estimates from Social Security Administration baby-name records (births 1880–2025) and SSA cohort life tables (2026 Trustees Report). How we calculate this