Quillan first appears in the U.S. registration record in 1982. Its popularity climbed over the following decades. In 2019, 19 babies received the name (ranked #5109). Today it sits well outside the top 1,000 (around #7371), with roughly 12 babies named Quillan each year. Quillan's usage has held roughly steady recently. In total, around 373 babies have been registered with this name since 1880.