Feminine dossier · first seen 1906
Lillyan
Stable Decline
Gradual decline from 2009
Peak era
2009
Peak births
193
Current vitality
Rare
Peak generation
Gen Z
Quick answers about Lillyan
How many people are named Lillyan?
An estimated 2,186 living Americans are named Lillyan.
How rare is Lillyan?
Lillyan is very rare among babies today, with 13 girls receiving the name in 2025, down 93.3% from its 2009 peak.
How old is the typical Lillyan?
The median age of a living American named Lillyan is approximately 16 years, with most bearers falling between 13 and 20 years old.
Is Lillyan still popular?
Not especially. Lillyan has been declining since its 2009 peak and registered 13 births in 2025.
Where is Lillyan most common?
Lillyan has its strongest geographic signal in Indiana, where it appears 3.5× more often than the national baseline.
1906Peak 20092025
Peak year
2009
Decline from peak
93.3%
2025
13
All-time
2,426
Where it lives now
Lillyan is most concentrated in Ohio — about 1.9× the national rate in the 2010s.
States where Lillyan is given more often than the national average — its present-day heartland.