Kayelyn is a distinctive girls' name in United States, ranking #12317 in 2016 with 8 recorded births. The name reached its all-time peak in 1999 with 14 births ranking #7031. Since 1996, the popularity has increased by 14.3%. In 2016, approximately 1 in every 221,436 girls born was named Kayelyn. RISING Recent data shows the name is currently rising.