Kaylyn is a distinctive girls' name in United States, ranking #769 in 2011 with 354 recorded births. The name reached its all-time peak in 1997 with 462 births ranking #519. Since 1996, the popularity has decreased by 15.5%. In 2011, approximately 1 in every 4,968 girls born was named Kaylyn. STABLE Recent data shows the name is currently stable.