Kayelyn is a distinctive girls' name in United States, ranking #14878 in 1997 with 5 recorded births. The name reached its all-time peak in 1999 with 14 births ranking #7031. Since 1996, the popularity has decreased by 28.6%. In 1997, approximately 1 in every 348,132 girls born was named Kayelyn. RISING Recent data shows the name is currently rising.