Feminine dossier · first seen 1912
Tilly
Rising
Gaining cultural share
Peak era
2025
Peak births
302
Current vitality
Fragile
Peak generation
Gen Alpha
Quick answers about Tilly
How many people are named Tilly?
An estimated 2,606 living Americans are named Tilly.
How rare is Tilly?
Tilly is uncommon among babies today, with 302 girls receiving the name in 2025, matching its recorded peak.
How old is the typical Tilly?
The median age of a living American named Tilly is approximately 6 years, with most bearers falling between 3 and 11 years old.
Is Tilly still popular?
Yes — Tilly is currently rising in popularity, with 302 births in 2025. Births this decade are running about 3.9× higher than the previous decade.
Where is Tilly most common?
Tilly has its strongest geographic signal in Washington, where it appears 2.5× more often than the national baseline.
1912Peak 20252025
Peak year
2025
Decline from peak
0%
2025
302
All-time
2,699
Where it lives now
Tilly is most concentrated in Washington — about 2.5× the national rate in the 2020s.
States where Tilly is given more often than the national average — its present-day heartland.