Feminine dossier · first seen 1907
Kelly
Endangered
Down 98.3% from peak
Peak era
1977
Peak births
18,234
Current vitality
Fragile
Peak generation
Gen X
Quick answers about Kelly
How many people are named Kelly?
An estimated 425,546 living Americans are named Kelly.
How rare is Kelly?
Kelly is uncommon among babies today, with 319 girls receiving the name in 2025, down 98.3% from its 1977 peak.
How old is the typical Kelly?
The median age of a living American named Kelly is approximately 48 years, with most bearers falling between 39 and 57 years old.
Is Kelly still popular?
No. Kelly is endangered as a baby name, down 98.3% from its 1977 peak with 319 births in 2025.
Where is Kelly most common?
Kelly has its strongest geographic signal in Idaho, where it appears 3.4× more often than the national baseline.
1907Peak 19772025
Peak year
1977
Decline from peak
98.3%
2025
319
All-time
473,965
Where it lives now
Kelly is most concentrated in Idaho — about 3.4× the national rate in the 1950s. It also runs high in Montana and Wyoming.
States where Kelly is given more often than the national average — its present-day heartland.