Thaddaeus is a distinctive boys' name in United States, ranking #6181 in 2023 with 15 recorded births. The name reached its all-time peak in 2005 with 29 births ranking #3444. Since 1996, the popularity has decreased by 37.5%. In 2023, approximately 1 in every 113,903 boys born was named Thaddaeus. FALLING Recent data shows the name is currently falling.