Thaddeus is a distinctive boys' name in United States, ranking #911 in 2003 with 183 recorded births. The name reached its all-time peak in 2016 with 416 births ranking #640. Since 1996, the popularity has decreased by 15.3%. In 2003, approximately 1 in every 10,794 boys born was named Thaddeus. RISING Recent data shows the name is currently rising.