Feminine dossier · first seen 1966
Lenni
Rising
Gaining cultural share
Peak era
2023
Peak births
52
Current vitality
Rare
Peak generation
Gen Alpha
Quick answers about Lenni
How many people are named Lenni?
An estimated 337 living Americans are named Lenni.
How rare is Lenni?
Lenni is very rare among babies today, with 46 girls receiving the name in 2025, down 11.5% from its 2023 peak.
How old is the typical Lenni?
The median age of a living American named Lenni is approximately 4 years, with most bearers falling between 2 and 7 years old.
Is Lenni still popular?
Yes — Lenni is currently rising in popularity, with 46 births in 2025. Births this decade are running about 13.3× higher than the previous decade.
1966Peak 20232025
Peak year
2023
Decline from peak
11.5%
2025
46
All-time
341