An estimated 69,318 living Americans are named Kai.
How rare is Kai?
Kai is moderately uncommon among babies today, with 3,768 boys receiving the name in 2025, down 29.9% from its 2022 peak.
How old is the typical Kai?
The median age of a living American named Kai is approximately 9 years, with most bearers falling between 4 and 16 years old.
Is Kai still popular?
Yes — Kai is currently rising in popularity, with 3,768 births in 2025. Births this decade are running about 2.1× higher than the previous decade.
Where is Kai most common?
Kai has its strongest geographic signal in Hawaii, where it appears 17.3× more often than the national baseline.
1926Peak 20222025
Peak year
2022
Decline from peak
29.9%
2025
3,768
All-time
70,232
Diaspora map
Kai broke out in Alaska, California, Colorado, Hawaii, Idaho, Maryland, Nevada, Oregon, and Washington (2001) and became over-represented in 26 states over 18 years.
Broke out: Alaska, California, Colorado, Hawaii, Idaho, Maryland, Nevada, Oregon, and Washington, 2001 · over-represented in 26 states over 18 years
