Kaziah vs Kazuko
American parents have registered 660 Kaziahs since 1880, against 398 Kazukos. Kaziah is still ahead, with 66 babies in 2025.
Babies given each name, 1880–2025
Kaziah Kazuko
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 56 years in which either name was published, Kaziah for 29 years and Kazuko for 27 years. The lead changed hands once.
Side by side
| Kaziah | Kazuko | |
|---|---|---|
| Total US births | 660 | 398 |
| Most in one year | 66 | 63 |
| Babies in 2025 | 66 | under 5 |
| Estimated living today | 660 | 40 |
| Median age today | 9 | 90 |
| Peak year | 2025 | 1927 |
| Best rank | 2,822nd girls | 955th girls |
| Rank in 2025 | 2,822nd | unranked |
| First recorded | 1995 | 1915 |
| Girls / boys | 581 / 79 | 398 / 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 Kazukos alive today are over 90; half the Kaziahs are over 9. That is 81 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: Kaziah and Kazuko.