Masculine dossier · first seen 1973
Fionn
Stable
Cross-generational persistence
Peak era
2018
Peak births
40
Current vitality
Rare
Peak generation
Gen Alpha
Quick answers about Fionn
How many people are named Fionn?
An estimated 674 living Americans are named Fionn.
How rare is Fionn?
Fionn is very rare among babies today, with 25 boys receiving the name in 2025, down 37.5% from its 2018 peak.
How old is the typical Fionn?
The median age of a living American named Fionn is approximately 12 years, with most bearers falling between 7 and 18 years old.
Is Fionn still popular?
Yes. Fionn is holding steady, with 25 births in 2025 and a consistent recent baseline.
1973Peak 20182025
Peak year
2018
Decline from peak
37.5%
2025
25
All-time
682