Masculine dossier · first seen 1991
Oisin
Stable
Cross-generational persistence
Peak era
2020
Peak births
31
Current vitality
Rare
Peak generation
Gen Alpha
Quick answers about Oisin
How many people are named Oisin?
An estimated 507 living Americans are named Oisin.
How rare is Oisin?
Oisin is very rare among babies today, with 22 boys receiving the name in 2025, down 29% from its 2020 peak.
How old is the typical Oisin?
The median age of a living American named Oisin is approximately 11 years, with most bearers falling between 6 and 20 years old.
Is Oisin still popular?
Yes. Oisin is holding steady, with 22 births in 2025 and a consistent recent baseline.
1991Peak 20202025
Peak year
2020
Decline from peak
29%
2025
22
All-time
513