Kailen is a distinctive girls' name in United States, ranking #12847 in 2022 with 7 recorded births. The name reached its all-time peak in 2007 with 41 births ranking #3880. Since 1996, the popularity has decreased by 61.1%. In 2022, approximately 1 in every 234,109 girls born was named Kailen. FALLING Recent data shows the name is currently falling.