Kaj vs Kajuan
American parents have registered 668 Kajuans since 1880, against 515 Kajs. But in 2025 it was Kaj that was commoner, 5 babies to fewer than five.
Babies given each name, 1880–2025
Kaj Kajuan
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 57 years in which either name was published, Kajuan for 32 years and Kaj for 25 years. The lead changed hands 10 times.
Side by side
| Kaj | Kajuan | |
|---|---|---|
| Total US births | 515 | 668 |
| Most in one year | 20 | 31 |
| Babies in 2025 | 5 | under 5 |
| Estimated living today | 500 | 650 |
| Median age today | 19 | 26 |
| Peak year | 2006 | 1997 |
| Best rank | 4,520th boys | 2,546th boys |
| Rank in 2025 | 12,008th | unranked |
| First recorded | 1956 | 1974 |
| Girls / boys | 0 / 515 | 0 / 668 |
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 Kajuans alive today are over 26; half the Kajs are over 19. That is 7 years between them: two names in use at the same time, worn by two different generations.
Where each one is strongest
- Kaj California (9.9×)
- Kajuan Michigan (26.2×)
How much commoner the name is in that state than it is nationally, from births recorded since 1910.
Compare something else
Related comparisons
Social Security Administration birth records, 1880–2025, public domain. Full histories: Kaj and Kajuan.