Keilen is a distinctive boys' name in United States, ranking #7225 in 1998 with 8 recorded births. This places Keilen in the bottom 36% 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 18 births ranking #5209. In 1998, approximately 1 in every 238,915 boys born was named Keilen. RISING Recent data shows the name is currently rising.