Thaddeus is a distinctive boys' name in United States, ranking #809 in 1998 with 188 recorded births. The name reached its all-time peak in 2016 with 416 births ranking #640. Since 1996, the popularity has decreased by 13.0%. In 1998, approximately 1 in every 10,167 boys born was named Thaddeus. RISING Recent data shows the name is currently rising.