Thadeus is a distinctive boys' name in United States, ranking #14111 in 2022 with 5 recorded births. The name reached its all-time peak in 2007 with 23 births ranking #4354. Since 1996, the popularity has decreased by 44.4%. In 2022, approximately 1 in every 348,875 boys born was named Thadeus. RISING Recent data shows the name is currently rising.