Kayelyn is a distinctive girls' name in United States, ranking #8269 in 1998 with 11 recorded births. The name reached its all-time peak in 1999 with 14 births ranking #7031. Since 1996, the popularity has increased by 57.1%. In 1998, approximately 1 in every 160,626 girls born was named Kayelyn. RISING Recent data shows the name is currently rising.