Masculine dossier · first seen 1971
Sebastien
Stable
Cross-generational persistence
Peak era
2007
Peak births
178
Current vitality
Rare
Peak generation
Gen Z
Quick answers about Sebastien
How many people are named Sebastien?
An estimated 3,991 living Americans are named Sebastien.
How rare is Sebastien?
Sebastien is uncommon among babies today, with 55 boys receiving the name in 2025, down 69.1% from its 2007 peak.
How old is the typical Sebastien?
The median age of a living American named Sebastien is approximately 18 years, with most bearers falling between 11 and 25 years old.
Is Sebastien still popular?
Yes. Sebastien is holding steady, with 55 births in 2025 and a consistent recent baseline.
Where is Sebastien most common?
Sebastien has its strongest geographic signal in Florida, where it appears 3.6× more often than the national baseline.
1971Peak 20072025
Peak year
2007
Decline from peak
69.1%
2025
55
All-time
4,057
Where it lives now
Sebastien is most concentrated in Massachusetts — about 2.9× the national rate in the 2000s.
States where Sebastien is given more often than the national average — its present-day heartland.