Feminine dossier · first seen 1923
Lyllian
Stable Decline
Gradual decline from 2009
Peak era
2009
Peak births
45
Current vitality
Rare
Peak generation
Gen Z
Quick answers about Lyllian
How many people are named Lyllian?
An estimated 616 living Americans are named Lyllian.
How rare is Lyllian?
Lyllian is very rare among babies today, with 5 girls receiving the name in 2025, down 88.9% from its 2009 peak.
How old is the typical Lyllian?
The median age of a living American named Lyllian is approximately 15 years, with most bearers falling between 12 and 19 years old.
Is Lyllian still popular?
Not especially. Lyllian has been declining since its 2009 peak and registered 5 births in 2025.
1923Peak 20092025
Peak year
2009
Decline from peak
88.9%
2025
5
All-time
635