An estimated 131,183 living Americans are named Katelyn.
How rare is Katelyn?
Katelyn is uncommon among babies today, with 225 girls receiving the name in 2025, down 96.2% from its 1993 peak.
How old is the typical Katelyn?
The median age of a living American named Katelyn is approximately 27 years, with most bearers falling between 20 and 33 years old.
Is Katelyn still popular?
No. Katelyn is endangered as a baby name, down 96.2% from its 1993 peak with 225 births in 2025.
Where is Katelyn most common?
Katelyn has its strongest geographic signal in Massachusetts, where it appears 14.0× more often than the national baseline.
1970Peak 19932025
Peak year
1993
Decline from peak
96.2%
2025
225
All-time
134,049
Diaspora map
Katelyn broke out in Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, Pennsylvania, and Rhode Island (1984) and became over-represented in 36 states over 33 years.
Broke out: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, Pennsylvania, and Rhode Island, 1984 · over-represented in 36 states over 33 years
