Kailyn is a distinctive girls' name in United States, ranking #1578 in 2024 with 133 recorded births. The name reached its all-time peak in 2011 with 793 births ranking #397. Since 1996, the popularity has decreased by 54.9%. In 2024, approximately 1 in every 12,129 girls born was named Kailyn. FALLING Recent data shows the name is currently falling.