Milen is a distinctive boys' name in United States, ranking #9569 in 2008 with 8 recorded births. This places Milen in the bottom 35% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2015 with 9 births ranking #8491. In 2008, approximately 1 in every 254,993 boys born was named Milen. RISING Recent data shows the name is currently rising.