Kilen is a distinctive boys' name in United States, ranking #13157 in 2014 with 5 recorded births. This places Kilen in the bottom 7% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2009 with 6 births ranking #11802. In 2014, approximately 1 in every 384,088 boys born was named Kilen. FALLING Recent data shows the name is currently falling.