Recorded 1880–2025 · United States
Aileen was most popular in 2009, when 685 American babies were given the name — ranking #877 that year. In 2025 it ranked #1,545, with 340 births. Across 1880–2025 the Social Security Administration has recorded 37,642 people named Aileen.
The Social Security Administration’s records begin in 1880, and Aileen is already there in that first year — so the name is older than the record and these figures cannot date it. It has been recorded in 143 of the 146 years since.
The Social Security Administration has recorded 37,642 American births named Aileen between 1880 and 2025. That is recorded US births, not a world population — it counts people issued a Social Security number at birth in the United States. Of those, roughly 25,793 are estimated to be alive today.
340 American babies were named Aileen in 2025, ranking #1,545 that year.
Aileen is falling. Across 2021–2025 it averaged 384 births a year, against 574 a year across 2011–2015 — a change of -33% over the decade.
Measured on recorded births. American births overall have fallen since 2007, so most established names lose births over any recent decade — a name can shed births and still hold its rank. Compare the rank above, which is measured against the other names of the same year.
Across the whole record Aileen is a girl’s name — 100.0% of the 37,642 Americans given it were girls and 0.0% were boys. In births since 2016 it is 100% girls and 0% boys.
Counted from every US birth the Social Security Administration recorded under this name, so it reflects use rather than opinion. A name given to fewer than five babies of one sex in a year is withheld at source and is not counted.
Roughly 25,793 Americans named Aileen are alive today — 69% of everyone ever recorded with the name. The median is 25 years old, and half are between 15 and 50. That is a wide band, the mark of a name in steady use across generations rather than a passing fashion.
An estimate, not a count. Recorded births are carried forward through the Social Security Administration’s 2023 period life table, by age and sex. That table describes mortality in one recent year, so it credits the oldest cohorts with today’s survival rather than the harsher rates they actually lived through — the further back a name peaked, the more this will overstate how many remain. It counts people issued a Social Security number at birth, not immigrants who arrived later.
How much more common the name is in each state than across the country as a whole.
See Aileen on the interactive charts
About · Privacy · Contact
Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org