Kailyn is a distinctive girls' name in United States, ranking #1446 in 2023 with 154 recorded births. The name reached its all-time peak in 2011 with 793 births ranking #397. Since 1996, the popularity has decreased by 47.8%. In 2023, approximately 1 in every 10,407 girls born was named Kailyn. FALLING Recent data shows the name is currently falling.