Leeon first appears in the U.S. registration record in 1934. Its popularity climbed over the following decades. In 2012, 13 babies received the name (ranked #6520). Today it sits well outside the top 1,000 (around #9815), with roughly 8 babies named Leeon each year. Leeon's usage has held roughly steady recently. In total, around 124 babies have been registered with this name since 1880.