Feminine dossier · first seen 1909
Ilona
Stable
Cross-generational persistence
Peak era
1946
Peak births
102
Current vitality
Rare
Peak generation
Boomer
Quick answers about Ilona
How many people are named Ilona?
An estimated 2,194 living Americans are named Ilona.
How rare is Ilona?
Ilona is very rare among babies today, with 38 girls receiving the name in 2025, down 62.7% from its 1946 peak.
How old is the typical Ilona?
The median age of a living American named Ilona is approximately 48 years, with most bearers falling between 21 and 68 years old.
Is Ilona still popular?
Yes. Ilona is holding steady, with 38 births in 2025 and a consistent recent baseline.
Where is Ilona most common?
Ilona has its strongest geographic signal in New Jersey, where it appears 2.7× more often than the national baseline.
1909Peak 19462025
Peak year
1946
Decline from peak
62.7%
2025
38
All-time
3,332
Where it lives now
Ilona is most concentrated in New York — about 2.4× the national rate in the 1950s.
States where Ilona is given more often than the national average — its present-day heartland.