Kayln is a distinctive girls' name in United States, ranking #6479 in 2006 with 20 recorded births. The name reached its all-time peak in 1996 with 23 births ranking #4513. Since 1996, the popularity has decreased by 13.0%. In 2006, approximately 1 in every 95,054 girls born was named Kayln. FALLING Recent data shows the name is currently falling.