Masculine dossier · first seen 1880
Llewellyn
Resurgent
Gaining cultural share
Peak era
1916
Peak births
69
Current vitality
Rare
Peak generation
Greatest Generation
Quick answers about Llewellyn
How many people are named Llewellyn?
An estimated 1,289 living Americans are named Llewellyn.
How rare is Llewellyn?
Llewellyn is very rare among babies today, with 16 boys receiving the name in 2025, down 76.8% from its 1916 peak.
How old is the typical Llewellyn?
The median age of a living American named Llewellyn is approximately 58 years, with most bearers falling between 41 and 69 years old.
Is Llewellyn still popular?
Yes — Llewellyn is currently rising in popularity, with 16 births in 2025. Births this decade are running about 1.8× higher than the previous decade.
Where is Llewellyn most common?
Llewellyn has its strongest geographic signal in Pennsylvania, where it appears 2.0× more often than the national baseline.
1880Peak 19162025
Peak year
1916
Decline from peak
76.8%
2025
16
All-time
3,414