An estimated 18,159 living Americans are named Katlyn.
How rare is Katlyn?
Katlyn is very rare among babies today, with 12 girls receiving the name in 2025, down 99% from its 1995 peak.
How old is the typical Katlyn?
The median age of a living American named Katlyn is approximately 29 years, with most bearers falling between 25 and 33 years old.
Is Katlyn still popular?
No. Katlyn is endangered as a baby name, down 99% from its 1995 peak with 12 births in 2025.
Peak year
1995
Decline from peak
99%
2025
12
All-time
18,433
Diaspora map
Katlyn spread fast — broke out in Indiana, Maryland, Massachusetts, Ohio, Pennsylvania, and Wisconsin (1988) and ran high in 24 states within a decade.
Broke out: Indiana, Maryland, Massachusetts, Ohio, Pennsylvania, and Wisconsin, 1988 · over-represented in 24 states over 8 years
