Thaddeus is a distinctive boys' name in United States, ranking #1023 in 2009 with 191 recorded births. The name reached its all-time peak in 2016 with 416 births ranking #640. Since 1996, the popularity has decreased by 11.6%. In 2009, approximately 1 in every 10,384 boys born was named Thaddeus. RISING Recent data shows the name is currently rising.