Feminine dossier · first seen 1880
Kathleen
Endangered
Down 99.2% from peak
Peak era
1951
Peak births
26,716
Current vitality
Fragile
Peak generation
Boomer
Quick answers about Kathleen
How many people are named Kathleen?
An estimated 406,666 living Americans are named Kathleen.
How rare is Kathleen?
Kathleen is uncommon among babies today, with 201 girls receiving the name in 2025, down 99.2% from its 1951 peak.
How old is the typical Kathleen?
The median age of a living American named Kathleen is approximately 66 years, with most bearers falling between 54 and 73 years old.
Is Kathleen still popular?
No. Kathleen is endangered as a baby name, down 99.2% from its 1951 peak with 201 births in 2025.
Where is Kathleen most common?
Kathleen has its strongest geographic signal in Massachusetts, where it appears 3.0× more often than the national baseline.
1880Peak 19512025
Peak year
1951
Decline from peak
99.2%
2025
201
All-time
713,645
Where it lives now
Kathleen is most concentrated in Massachusetts — about 3.0× the national rate in the 2000s.
States where Kathleen is given more often than the national average — its present-day heartland.