Quick answers about Kei
How many people are named Kei?
An estimated 627 living Americans are named Kei.
How rare is Kei?
Kei is very rare among babies today, with 14 boys receiving the name in 2025, down 57.6% from its 2015 peak.
How old is the typical Kei?
The median age of a living American named Kei is approximately 15 years, with most bearers falling between 8 and 28 years old.
Is Kei still popular?
Not especially. Kei has been declining since its 2015 peak and registered 14 births in 2025.
Where is Kei most common?
Kei has its strongest geographic signal in California, where it appears 2.1× more often than the national baseline.
1920Peak 20152025
Where it lives now
Kei is most concentrated in California — about 2.1× the national rate in the 2010s.
States where Kei is given more often than the national average — its present-day heartland.
3×+
2×+
1.5×+
1.2×+
~ national
