Kaelyn is a distinctive girls' name in United States, ranking #651 in 2000 with 380 recorded births. The name reached its all-time peak in 2009 with 997 births ranking #332. Since 1996, the popularity has increased by 27.5%. In 2000, approximately 1 in every 4,779 girls born was named Kaelyn. STABLE Recent data shows the name is currently stable.