1978Peak 19982025
Quick answers about Reilly
How many people are named Reilly?
An estimated 5,465 living Americans are named Reilly.
How rare is Reilly?
Reilly is uncommon among babies today, with 60 girls receiving the name in 2025, down 84.2% from its 1998 peak.
How old is the typical Reilly?
The median age of a living American named Reilly is approximately 23 years, with most bearers falling between 16 and 27 years old.
Is Reilly still popular?
Not especially. Reilly has been declining since its 1998 peak and registered 60 births in 2025.
Diaspora map
Reilly spread fast — broke out in Illinois (1997) and ran high in 5 states within a decade.
Broke out: Illinois, 1997 · over-represented in 5 states over 1 year
Origin
≤5 yrs
≤15 yrs
16+ yrs
No breakout
