Humanverse

Aileen vs Ailin

American parents have registered 37,642 Aileens since 1880, against 1,183 Ailins. Aileen is still ahead, with 340 babies in 2025.

Babies given each name, 1880–2025

Births per year: Aileen against Ailin, 1880 to 2025 0 200 400 600 800 1880 1900 1920 1940 1960 1980 2000 2020

Aileen Ailin

Each line is every baby given the name that year, girls and boys added together — the only count that means the same thing for both names. A line breaks where the name fell below five babies in a year — the point at which the SSA stops publishing it — rather than being drawn through a figure nobody published. A single published year in a gap shows as a dot.

Who was ahead

Aileen has been the commoner name in every year either was published, 1880 to 2025. The lead has never changed hands.

The closest they came was 2012, when Aileen had 603 and Ailin had 89.

Side by side

  Aileen Ailin
Total US births 37,6421,183
Most in one year 68589
Babies in 2025 34040
Estimated living today 26,0001,200
Median age today 2414
Peak year 20092012
Best rank 454th girls2,232nd girls
Rank in 2025 799th3,712th
First recorded 18801990
Girls / boys 37,637 / 51,178 / 5

A rank is a position within one sex’s list for one year, so the two rank rows are not subtracted from one another and the winning column is not marked on them. The living figure is a life-table estimate, not a count.

Which name is older

Half of the Aileens alive today are over 24; half the Ailins are over 14. That is 10 years between them: two names in use at the same time, worn by two different generations.

Where each one is strongest

How much commoner the name is in that state than it is nationally, from births recorded since 1910.

Both names abroad

Countries whose statistics office publishes both names, so the comparison can be made somewhere other than the United States.

Country Aileen Ailin
Norway 169375
England and Wales 22213
Poland 29

Every spelling a country files separately is added together, over whatever years that country publishes — which is not the same range in any two of them, so read the columns against each other and not the rows.

Compare something else

Related comparisons

Social Security Administration birth records, 1880–2025, public domain. Full histories: Aileen and Ailin.