Kailen is a distinctive girls' name in United States, ranking #9876 in 2020 with 10 recorded births. This places Kailen in the bottom 44% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2007 with 41 births ranking #3880. Since 1996, the popularity has decreased by 44.4%. In 2020, approximately 1 in every 161,551 girls born was named Kailen. FALLING Recent data shows the name is currently falling.