Kayelyn is a distinctive girls' name in United States, ranking #14729 in 2018 with 6 recorded births. The name reached its all-time peak in 1999 with 14 births ranking #7031. Since 1996, the popularity has decreased by 14.3%. In 2018, approximately 1 in every 283,404 girls born was named Kayelyn. RISING Recent data shows the name is currently rising.