Aidan vs Aidsa
American parents have registered 121,158 Aidans since 1880, against 30 Aidsas. Aidan is still ahead, with 1,051 babies in 2025.
Babies given each name, 1880–2025
Aidan Aidsa
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
Aidan has been the commoner name in every year either was published, 1936 to 2025. The lead has never changed hands.
The closest they came was 2007, when Aidan had 8,553 and Aidsa had 30.
Side by side
| Aidan | Aidsa | |
|---|---|---|
| Total US births | 121,158 | 30 |
| Most in one year | 10,296 | 30 |
| Babies in 2025 | 1,051 | under 5 |
| Estimated living today | 119,000 | 30 |
| Median age today | 19 | 18 |
| Peak year | 2003 | 2007 |
| Best rank | 39th boys | 4,808th girls |
| Rank in 2025 | 326th | unranked |
| First recorded | 1936 | 2007 |
| Girls / boys | 2,727 / 118,431 | 30 / 0 |
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.
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Social Security Administration birth records, 1880–2025, public domain. Full histories: Aidan and Aidsa.