Masculine dossier · first seen 1956
Kaj
Stable
Cross-generational persistence
Peak era
2006
Peak births
20
Current vitality
Rare
Peak generation
Gen Z
Quick answers about Kaj
How many people are named Kaj?
An estimated 498 living Americans are named Kaj.
How rare is Kaj?
Kaj is very rare among babies today, with 5 boys receiving the name in 2025, down 75% from its 2006 peak.
How old is the typical Kaj?
The median age of a living American named Kaj is approximately 20 years, with most bearers falling between 13 and 33 years old.
Is Kaj still popular?
Yes. Kaj is holding steady, with 5 births in 2025 and a consistent recent baseline.
1956Peak 20062025
Peak year
2006
Decline from peak
75%
2025
5
All-time
515