Feminine dossier · first seen 2006
Theory
Rising
Gaining cultural share
Peak era
2023
Peak births
20
Current vitality
Rare
Peak generation
Gen Alpha
Quick answers about Theory
How many people are named Theory?
An estimated 164 living Americans are named Theory.
How rare is Theory?
Theory is very rare among babies today, with 20 girls receiving the name in 2025, matching its recorded peak.
How old is the typical Theory?
The median age of a living American named Theory is approximately 5 years, with most bearers falling between 3 and 10 years old.
Is Theory still popular?
Yes — Theory is currently rising in popularity, with 20 births in 2025. Births this decade are running about 3.5× higher than the previous decade.
2006Peak 20232025
Peak year
2023
Decline from peak
0%
2025
20
All-time
165