Thad appears in U.S. registration data going all the way back to 1880, when records begin. Its popularity climbed over the following decades. In 1967, 365 babies received the name (ranked #401). Today it sits well outside the top 1,000 (around #7620), with roughly 13 babies named Thad each year. Thad has been declining in recent years. In total, around 8,217 babies have been registered with this name since 1880.