Masculine dossier · first seen 1957
Seamus
Stable Decline
Gradual decline from 2008
Peak era
2008
Peak births
298
Current vitality
Fragile
Peak generation
Gen Z
Quick answers about Seamus
How many people are named Seamus?
An estimated 7,633 living Americans are named Seamus.
How rare is Seamus?
Seamus is uncommon among babies today, with 154 boys receiving the name in 2025, down 48.3% from its 2008 peak.
How old is the typical Seamus?
The median age of a living American named Seamus is approximately 19 years, with most bearers falling between 12 and 28 years old.
Is Seamus still popular?
Not especially. Seamus has been declining since its 2008 peak and registered 154 births in 2025.
Where is Seamus most common?
Seamus has its strongest geographic signal in Massachusetts, where it appears 6.6× more often than the national baseline.
1957Peak 20082025
Peak year
2008
Decline from peak
48.3%
2025
154
All-time
7,809