Eion first appears in the U.S. registration record in 1981. Its popularity climbed over the following decades. In 2000, 32 babies received the name (ranked #2824). Today it sits well outside the top 1,000 (around #8336), with roughly 10 babies named Eion each year. Eion's usage has held roughly steady recently. In total, around 529 babies have been registered with this name since 1880.