Masculine dossier · first seen 1924
Thaddaeus
Stable Decline
Gradual decline from 2005
Peak era
2005
Peak births
29
Current vitality
Rare
Peak generation
Gen Z
Quick answers about Thaddaeus
How many people are named Thaddaeus?
An estimated 1,005 living Americans are named Thaddaeus.
How rare is Thaddaeus?
Thaddaeus is very rare among babies today, with 10 boys receiving the name in 2025, down 65.5% from its 2005 peak.
How old is the typical Thaddaeus?
The median age of a living American named Thaddaeus is approximately 26 years, with most bearers falling between 14 and 39 years old.
Is Thaddaeus still popular?
Not especially. Thaddaeus has been declining since its 2005 peak and registered 10 births in 2025.
1924Peak 20052025
Peak year
2005
Decline from peak
65.5%
2025
10
All-time
1,045