Kilen is a distinctive boys' name in United States, ranking #13391 in 2010 with 5 recorded births. This places Kilen in the bottom 6% 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 2010, approximately 1 in every 383,682 boys born was named Kilen. FALLING Recent data shows the name is currently falling.