Thaddeus is a distinctive boys' name in United States, ranking #798 in 2025 with 314 recorded births. The name reached its all-time peak in 2016 with 416 births ranking #640. Since 1996, the popularity has increased by 45.4%. In 2025, approximately 1 in every 5,440 boys born was named Thaddeus. RISING Recent data shows the name is currently rising.