Masculine dossier · first seen 1948
Kelby
Stable Decline
Gradual decline from 1991
Peak era
1991
Peak births
187
Current vitality
Rare
Peak generation
Millennial
Quick answers about Kelby
How many people are named Kelby?
An estimated 3,850 living Americans are named Kelby.
How rare is Kelby?
Kelby is very rare among babies today, with 18 boys receiving the name in 2025, down 90.4% from its 1991 peak.
How old is the typical Kelby?
The median age of a living American named Kelby is approximately 31 years, with most bearers falling between 22 and 38 years old.
Is Kelby still popular?
Not especially. Kelby has been declining since its 1991 peak and registered 18 births in 2025.
Where is Kelby most common?
Kelby has its strongest geographic signal in Oklahoma, where it appears 5.4× more often than the national baseline.
1948Peak 19912025
Peak year
1991
Decline from peak
90.4%
2025
18
All-time
4,019
Where it lives now
Kelby is most concentrated in Oklahoma — about 5.4× the national rate in the 1990s. It also runs high in Utah and Texas.
States where Kelby is given more often than the national average — its present-day heartland.