Kaelyn is a distinctive girls' name in United States, ranking #650 in 2002 with 389 recorded births. The name reached its all-time peak in 2009 with 997 births ranking #332. Since 1996, the popularity has increased by 30.5%. In 2002, approximately 1 in every 4,619 girls born was named Kaelyn. STABLE Recent data shows the name is currently stable.