Kaylyn is a distinctive girls' name in United States, ranking #1272 in 2015 with 192 recorded births. The name reached its all-time peak in 1997 with 462 births ranking #519. Since 1996, the popularity has decreased by 54.2%. In 2015, approximately 1 in every 9,295 girls born was named Kaylyn. STABLE Recent data shows the name is currently stable.