Kayln is a distinctive girls' name in United States, ranking #11468 in 2013 with 9 recorded births. The name reached its all-time peak in 1996 with 23 births ranking #4513. Since 1996, the popularity has decreased by 60.9%. In 2013, approximately 1 in every 194,935 girls born was named Kayln. FALLING Recent data shows the name is currently falling.