Kaiden vs Kailei
American parents have registered 54,156 Kaidens since 1880, against 617 Kaileis. Kaiden is still ahead, with 1,488 babies in 2025.
Babies given each name, 1880–2025
Kaiden Kailei
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
Of the 38 years in which either name was published, Kaiden for 34 years and Kailei for 4 years. The lead changed hands once.
Side by side
| Kaiden | Kailei | |
|---|---|---|
| Total US births | 54,156 | 617 |
| Most in one year | 3,352 | 34 |
| Babies in 2025 | 1,488 | under 5 |
| Estimated living today | 54,000 | 610 |
| Median age today | 10 | 18 |
| Peak year | 2014 | 2004 |
| Best rank | 124th boys | 4,093rd girls |
| Rank in 2025 | 237th | unranked |
| First recorded | 1992 | 1988 |
| Girls / boys | 1,594 / 52,562 | 617 / 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.
Which name is older
Half of the Kaileis alive today are over 18; half the Kaidens are over 10. That is 8 years between them: two names in use at the same time, worn by two different generations.
Compare something else
Related comparisons
Social Security Administration birth records, 1880–2025, public domain. Full histories: Kaiden and Kailei.