Recorded 1936–2025 · United States
Aidan was most popular in 2003, when 10,296 American babies were given the name — ranking #60 that year. In 2025 it ranked #629, with 1,051 births. Across 1880–2025 the Social Security Administration has recorded 121,158 people named Aidan.
Aidan first appears in Social Security Administration records in 1936, which makes it about 89 years old as a recorded American name. It has been recorded in 68 of the 90 years since.
The Social Security Administration has recorded 121,158 American births named Aidan 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 119,445 are estimated to be alive today.
1,051 American babies were named Aidan in 2025, ranking #629 that year.
Aidan is falling. Across 2021–2025 it averaged 1,134 births a year, against 2,867 a year across 2011–2015 — a change of -60% 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 Aidan is a boy’s name — 2.2% of the 121,158 Americans given it were girls and 97.8% were boys. In births since 2016 it is 1% girls and 99% 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 119,445 Americans named Aidan are alive today — 99% of everyone ever recorded with the name. The median is 20 years old, and half are between 16 and 23. That is a narrow band: Aidan arrived and faded within about a decade rather than staying in steady use.
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.
A variant of Aiden · Irish · "little fire"
How much more common the name is in each state than across the country as a whole.
See Aidan on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org