Kaylyn is a distinctive girls' name in United States, ranking #589 in 2000 with 437 recorded births. This places Kaylyn in the top 3% of ranked US girls' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 1997 with 462 births ranking #519. In 2000, approximately 1 in every 4,156 girls born was named Kaylyn. STABLE Recent data shows the name is currently stable.